1. Mr. Lui wrote 15 - 5x/x^2 - 9x + 18.

Question

a. Explain what kind of expression it is.
b. Simplify the expression. Show your work.
c. Identify any excluded values.

A:

a. It is a rational expression.
b. 5/x - 6
c. Excluded value: x = 6

2. Lynne can paint a wall in 40 minutes. Jeff can paint the same wall in 60 minutes. How long will it take Lynne and Jeff to paint the wall if they work together?

A: ?

3. What are 2 values of b that will make 2x^2 - bx - 20 factorable? Explain your answer.

A: ?

Answer 1

Please!