Question

Can someone help me in this exercise, it is about functions. Thank you

Answer 1

Answer:

a)

Since the radius of the balloon increases by 5 cm every second, the amount of time passed in seconds multiplied by 5 will give us the radius at any given point in time

So, f(t) = 5t

b)

Since the surface area of a sphere is 4$\pi$ (r)^2

We already have the radius of the sphere at any given time from our first equation

SA(t) = 4$\pi$ (5t)²

Kindly Mark Brainliest, Thanks!