Exam 1: Review of Algebra

Solve: + = 2

Given the numbers 4,-7, ,π,0,- 0.2,list those that are rational.

Solve: 0.4x - 3 = 6

The difference between the length of a ramp and the length of the horizontal distance it covers is 1 foot.The square of the vertical distance it covers is 9 feet.What is the length of the ramp?

=

10 L solution of water and acetic acid contains 10% of the acid.15 L of water was added to the solution.What is the percentage of the acetic acid in the new solution?

Solve: - 1 =

Simplify: (7x)

Simplify and express your answer in terms of positive exponents:

Divide and simplify:

Find the real roots of the equation: (x + - 8 = 0

Simplify the following; express your answer with no radical in the denominator:

Perform the operations and simplify: x(x + 4)- (x + 4)(x - 5)

÷ =

Suppose the weekly revenue for a company is given by r = + 60p where p is the price of their service.What is the price of their service if the revenue is $400?

Divide and simplify: ( - y - x)÷ (2xy)

Solve: =

Multiply and simplify:

Solve the equation S = P(1 + rt)for t.

Completely factor: - 16