Find the simple intrest 130$ 10% 4years

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

Rationalize the denominator- 12x/√x-10

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.