For questions 2 and 3, simplify each polynomial.3x2 + 6 - 2x + 5x - 4x2 +9a. -x^2 + 3x + 15b. 7x^2 + 3x + 3c. x^2-3x+15d. -x^2 + 7x + 15

A

Step-by-step explanation:

3x² + 6 - 2x + 5x - 4x² + 9

Combine like terms:

3x² - 4x² - 2x + 5x + 6 + 9

-x² + 3x + 15

(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i