Question

Please answer this question fast!

Answer 1

A) 48

B) 3 seconds

Explanation:

A) -16+40+24 = 48

B) -16t² + 40t + 24 = 0

2t² - 5t - 3 = 0 (÷ by -8)

2t² - 6t + t - 3 = 0

2t(t -3) + 1(t - 3) = 0

(t - 3)(2t + 1) = 0

t = 3, t = -½