Can someone teach me how to do this.

Write a function that matches the description. a cosine function has a maximum of 5 and a minimum value of -5. f (r) =

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

Heather is writing a quadratic function that represents a parabola that touches but does not cross the x-axis at x = -6. which function could heather be writing? fx) = x2 + 36x + 12 = x2 - 36x - 12 f(x) = -x + 12x + 36 f(x) = -x? - 12x - 36