Mary is thinking of a mystery number. She reduces it by 15% then subtracts 5. The result is 29. Determine the mystery number
1 answer:
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Answer:
Step-by-step explanation:
Known facts:
- the ball dropped from a height of 64 feet
- function
First question:
- the ball hits the ground when h(t) = 0, thus we get the equation
So the ball hits the ground in 2s
Second question
- to find how long it takes the ball to fall 36 feet, we must set h(t) = 64 - 36 = 28
So the ball hits the ground in 1.5s
Hope that helps!