Question

The question in beloew isnide the picture :)

Answer 1

I need help to and I don’t know how to solve this but I hope you solve urs

Answer 2

72 seconds

Explanation:
To reach 50 feet, use the time formula to get the total time used, so: time = (0-18) / -0.25

-18 / -0.25

= 72 seconds