The formula for converting miles into feet is F = 5280m. If m = 12, evaluate this to find F, the number of feet in 12 miles.

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.