Alandscaping firm brought three trucks loaded with topsoil to a job site. two trucks carried 7.57 cubic yards each, and one truck carried 5.11 cubic yards. when the job was finished, 3.54 cubic yards remained. find the number of cubic yards used.

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.