Question 1

If f(x)=  
and g(x)= x + 1,find: (a)f(g(x))and (b)g(f(x)).

Accepted Answer

(a)  
(b)  + 1 =

Question 2

If f(p,q)= 3  
- 2q+ p,find f(-1,2).

Accepted Answer

-2

Question 3

If f(x)=  + x,then f(-2)=

Accepted Answer

A)   0.
B)    -2.
C)   3.
D)   -7.
E)   7. C

Question 4

Sketch a graph of f(x)=  
+ 7

Accepted Answer

The answer of Sketch a graph of f(x)=  
+...

Question 5

Sketch a graph of f(x)= |x| + 4

Accepted Answer

The answer of Sketch a graph of f(x)= |x| +...

Question 6

Julie lives 32 miles from the city.She drove home from the city at a constant rate of 60 mph along the highway.At the exit 2 miles from her home,she realized she had left her purse at the department store.She immediately returned to the department store at a rate of 60 mph.Graph the absolute-value function to represent Julie's distance from home as she drove home from the city over the appropriate domain.

Accepted Answer

The answer of Julie lives 32 miles from the city.She...

Question 7

Suppose the weekly supply function for a large pizza at a local pizza parlor is p =  
.
(a)How many large pizzas will be supplied if the price is $12.50 per pizza?
(b)How many large pizzas will be supplied if the price is $18.75 per pizza?
(c)How does the amount supplied change as the price increases?

Accepted Answer

The answer of Suppose the weekly supply function for a...

Question 8

The domain of f(q)=  is

Accepted Answer

A)   all real numbers
B)   all real numbers except 1 and -1
C)   all real numbers except -4
D)   all real numbers except -2 and 2
E)   all real numbers except -1, 1, and -2

Question 9

In June Gail decided to save $20.00 a week.She saved for 14 weeks and then for 14 weeks she spent $20.00 a week on gifts.Write an absolute-value function to represent the amount of money Gail had in savings.

Accepted Answer

The answer of In June Gail decided to save $20.00...

Question 10

Find the domain of the function: f(q)=

Accepted Answer

The answer of Find the domain of the function: f(q)=...

Question 11

The domain of the function f(x)=  is

Accepted Answer

A)   all real numbers ≥ 2
B)   all real numbers ≥ -2
C)   all real numbers ≥ -2 except 4
D)   all real numbers ≥ 2 except 4
E)   all real numbers except 4 and -4

Question 12

Use a graphing calculator to find all real roots of the equation.Round answers to two decimal places,if necessary:

Accepted Answer

The answer of Use a graphing calculator to find all...

Question 13

The domain of f(t)=  is

Accepted Answer

A)   all real numbers
B)   all real numbers except 0
C)   all real numbers except 2
D)   all real numbers except 4
E)   all real numbers except 2 and 4

Question 14

Find the domain of the function: f(t)=

Accepted Answer

The answer of Find the domain of the function: f(t)=...

Question 15

Determine whether the graph of y =  
is symmetric about the x-axis,the y-axis,the origin,or the line y = x.

Accepted Answer

The answer of Determine whether the graph of y =...

Question 16

A coat costs x wholesale.The price the store pays is given by the function s(x)= 1.2x where x is the wholesale price.The price the customer pays is c(x)= 2x + 50 where x is the price the store pays.Write a composite function to find the customer's price as a function of the wholesale price.

Accepted Answer

The answer of A coat costs x wholesale.The price the...

Question 17

If (f(x)= 3 - 2x,find f(f(x)).

Accepted Answer

The answer of If (f(x)= 3 - 2x,find f(f(x))....

Question 18

If f(x)= 5 - x and g(x)=  
- 3x + 4,find:
(a)(f + g)(x)
(b)(f - g)(x)
(c)(f - g)(2)
(d)(fg)(x)
(e)(fg)(0)
(f)  
(x)
(g)f(g(x))
(h)g(f(x))
(i)g(f(1))

Accepted Answer

The answer of If f(x)= 5 - x and g(x)=...

Question 19

Find the domain of the function: F(x)=

Accepted Answer

The answer of Find the domain of the function: F(x)=...

Question 20

If g(s)=  
- s,find:
(a)the domain
(b)g(0)
(c)g(3)
(d)g(-4)
(e)g

Accepted Answer

The answer of If g(s)=  
- s,find:
(a)the domain
(b)g(0)
(c)g(3)
(d)g(-4)
(e)g ...

Exam 3: Functions and Graphs

If f(x)= and g(x)= x + 1,find: (a)f(g(x))and (b)g(f(x)).

If f(p,q)= 3 - 2q+ p,find f(-1,2).

If f(x) = + x,then f(-2) =

Sketch a graph of f(x)= + 7

Sketch a graph of f(x)= |x| + 4

Suppose the weekly supply function for a large pizza at a local pizza parlor is p = . (a)How many large pizzas will be supplied if the price is $12.50 per pizza? (b)How many large pizzas will be supplied if the price is $18.75 per pizza? (c)How does the amount supplied change as the price increases?

The domain of f(q) = is

In June Gail decided to save $20.00 a week.She saved for 14 weeks and then for 14 weeks she spent $20.00 a week on gifts.Write an absolute-value function to represent the amount of money Gail had in savings.

Find the domain of the function: f(q)=

The domain of the function f(x) = is

Use a graphing calculator to find all real roots of the equation.Round answers to two decimal places,if necessary:

The domain of f(t) = is

Find the domain of the function: f(t)=

Determine whether the graph of y = is symmetric about the x-axis,the y-axis,the origin,or the line y = x.

A coat costs x wholesale.The price the store pays is given by the function s(x)= 1.2x where x is the wholesale price.The price the customer pays is c(x)= 2x + 50 where x is the price the store pays.Write a composite function to find the customer's price as a function of the wholesale price.

If (f(x)= 3 - 2x,find f(f(x)).

If f(x)= 5 - x and g(x)= - 3x + 4,find: (a)(f + g)(x) (b)(f - g)(x) (c)(f - g)(2) (d)(fg)(x) (e)(fg)(0) (f) (x) (g)f(g(x)) (h)g(f(x)) (i)g(f(1))

Find the domain of the function: F(x)=

If g(s)= - s,find: (a)the domain (b)g(0) (c)g(3) (d)g(-4) (e)g