Answer:
7. -7/4, 8. 2, 9. (4, 2), 10. (-2, 3)
Step-by-step explanation:
is the equation that will be used for 7 and 8
9x
(x² + 2x) - (x² - 7x) ← distribute parenthesis
= x² + 2x - x² + 7x ← collect like terms
= 9x
x=3
check the picture below.
7/36 ft^3
7/12 * 1/3 = 7/36