PLEASE HELO ME AND EXPLAIN PLEASE. AND PLEASE SHOW IN STEPS!! i will mark brainliest if you get it correct!

Step-by-step explanation:

The height of the swipe card is given by :

.....(1)

We need to find the maximum height of the swipe card and the time to reach the maximum height.

For maximum height, put dh/dt = 0

So,

It will take 1.67 seconds to reach the maximum height.

Now, put t = 1.67 s in equation (1).

Hence, the maximum height of the swipe card is 34.68 feet and the time to reach this height is 1.67 s.

i believe it is c.y = 9x

rise over run. 9 units up over 1 unit right or 9/1

a. she will receive a refund of $278.

step-by-step explanation: