# Quadratic Equations and Expressions Question

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## Grade 11 Quadratic Equations and Expressions CCSS: HSA-REI.B.4, HSA-REI.B.4b

[math]h = -16t^2 + s[/math]

h = height in which it hits its target = 0 feet

s = initial height at which jump occurs = 64 feet

Farmer Brown had a silo that was 64 feet high. He joined a circus and started jumping from the top of his silo into the pond below. How many seconds did it take him to hit the water 64 feet below?

- t = +/- 2 seconds
- t = - 2 seconds
- t = 2 seconds
- t ~ 2.3 seconds