Hello please help me with Question (A) please and thanks :)
> will give brainlst

Select the quadratic that has root x = 8 and x = -5

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?