Exam 6: Topics in Algebra

State whether or not the relation is a function. {(-1, 7), (0, 8), (1, 9), (2, 10)}

The number of women who use a computer at work in Elbonia can be modeled by the equation Y =7,178x + 10,514, where x is the number of years from now. How many Elbonian women will be Using a computer at work 10 years from now if this trend continues?

Graph

Write the ratio as a fraction and reduce to lowest terms. 6 cents to 14 cents

Graph

Plot (1.5, -3.9)on the Cartesian plane.

Graph

Write the ratio as a fraction and reduce to lowest terms. 4 feet to 20 inches

Graph the linear function.

Graph y = -1.

A puppy gets cups of food per day. Write a variation equation that describes how many cups of food she eats in terms of days, then use it to find how much she eats in 6 days and in 4 weeks.

The percentage of an adult population that smokes can be modeled by the function P(x)whose graph Is shown below. The input x is years after 1955. In what year did the percentage of smokers drop below 20%?

A waitress made $6.53 per hour plus $75 in tips on a Friday evening shift. The amount of money She makes for the night is given by the function P(t )= 6.53t + 75, where t is the number of hours She worked. How much would a waitress make for a 12-hour shift if the pay is the same?

Graph .

Graph the parabola

If the perimeter of a triangular flower bed is 15 feet with two sides the same length and the third side 3 feet longer, what are the measures of the three sides of the flower bed?

Graph the linear function

Plot (0, 2)on the Cartesian plane.

Find the slope of the line passing through the points (3, 1)and (0, -6).

Find the domain and range of the function.