Will get marked brainiest! what is the surface area of the right cone below

Aboat's value over time is given as the function f(x) and graphed below. use a(x) = 400(b)x + 0 as the parent function. which graph shows the boat's value increasing at a rate of 25% per year?

If you shift the linear parent function, f(x)=x, up 13 units, what is the equation of the new function?

Could somebody me with this radical simplification?