What is the greatest common factor of 30b^2, 80b^, 20b^3?

10b^2

Step-by-step explanation:

30b^2: 5 * 2 * 3 * b^2  

80b^2: 5 * 2 * 2 * 2 *2 * b^2

20b^3: 5 * 2 * 2 * b^2 * b

The highest common factor is in bold script. It is 10b^2

a.

step-by-step explanation:

step 1 distribute 2 to every term in the parentheses

step 2 add 10 on both sides of the equal sign

the function makes a strait line horizontally with no x intercept but a y intercept at 9.