The number of different cars sold in some country rose from 205 in 1997 to 277 in 2007. Find the percent increase. Round to the nearest whole percent.

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.