Chen has $500 saved for a new TV. There is one on sale for $700. He can wait and save more money, or he can finance his purchase and make payments for two years. The payments add up to $850. Should he buy the TV on sale now? ​

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.