2x² - 3x - 20
40
2 20
4 10
5 8
2x² - 8x 5x - 20
2x(x - 4) 5(x - 4)
(2x + 5) (x - 4)
2x + 5 = 0 x - 4 = 0
2x = -5 x = 4
x = -5/2
C) x = -2.5 and 4
Answer:
20 feet under sea level
Step-by-step explanation:
X can be anything you want as long as it is not 1 or -7. If you have repeated x values with different y values, then it won't be a function.
