3.625 seconds

3.20 seconds

0.5 seconds or 3.625 seconds

0.5 seconds or 2.625 seconds

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## Answers

## ElizbethLiddle208

To answer the question above, substitute the given value of height.

25 = -16x² + 50t + 4

Solving the following equation by the use of quadratic formula,

x = (-b +/- sqrt (b² - 4ac)) / 2a

Subsituting the known values of a, b, and c

x = (-50 +/- sqrt (50² - 4(-16)(-21)) / 2x-16

The values of x are 0.5 and 2.625. Therefore, the answer is the fourth choice.