Question

The height (h), in feet, of a balloon is calculated by using the equation h= 3+ + 2 where t is time, in seconds.What is the height of the balloon after 30 seconds?A. 60 ftB. 66 ftO C. 92 ftO D. 102 ft

Answer 1

Given data:

The given expression for height is h=3t+2.

Substitute 30 for t in the above expression.

`\begin{gathered} h=3(30)+2 \\ =92\text{ ft} \end{gathered}`

Thus, the height of the balloon after 30 seconds is 92 ft, so option (C) is correct.