Exam 1: Review of Algebra

Simplify: (-15)÷ (-5)

Multiply and simplify: (t + 2s)(t - 2s)

Solve: 2(t - 1)- 3(t - 4)= 4t

( - 9x)+ (36 - 4 )

The negative of -2 is

How many of the following are true? I. = II. = 2 + 3 III. = IV. - =

Solve: + 8t + 7 = 0

Simplify and express your answer in terms of positive exponents:

is the formula for the area A of a circle with radius r.A circular tablecloth has an area A.What is its radius?

Divide and simplify: ( + 5x - 3)÷ (2x + 1)

A comedy club's nightly revenue from the sale of x tickets is given by r = 15x and its nightly costs are given by How many tickets need to be sold each night to break even? In other words,when will revenue equal costs?

Simplify and express your answer in terms of positive exponents:

Add the algebraic expressions: +

Greg and Andrea want to buy a house,so they have decided to save one fifth of each of their salaries.Greg earns $15.00 per hour and receives an extra $5.00 a week because he declined company benefits,and Andrea earns $14.00 per hour plus benefits.They want to save at least $175.00 each week.How many hours must they each work each week?

Solve 2q - 1 = 2(1 - q)

Simplify: ³

Simplify:

Simplify: -2

The miles a person can see to the horizon from a point above the surface of Earth is 0.85 of the square root of the person's distance in feet above the surface.Karen is 39 feet higher and sees 2.55 miles farther than Sharon.How high are Karen and Sharon above the surface?

Multiply and simplify: (z - 5)(z - 1)