Question

A roller coaster's height is given by the equation h= -0.46t^2+ 5t +75, where t represents the time in seconds. How long will it take riders to pass over the hill and reach ground level? Hint: Set h = 0.

O 122.05 seconds
O 75.00 seconds
O 54.35 seconds
O26.71 seconds

Answer 1

026.71 seconds

Explanation:

h=0.46^2

Answer 2

Answer:A) 122.05 seconds

Explanation:

I know this was posted a long time ago, but i’m answering it for anyone that searches online and can’t find the answer anywhere. Anyways here is the work.

Step 1: substitute 0 for h

h= - .046t^2 + 5t + 75

-.046t^2 + 5t + 75 = 0

.046t^2 - 5t - 75 = 0

Step 2: you solve by factoring and you get t = 122.05 seconds

Therefore, the answer is A. (i took the flvs test and it was right btw)