I think of a number. When I add 12 and subtract 8, I get
15. What is that number?

The price of a car has been reduced from $19,000 to $11,590. what is the percentage decrease of the price of the car?

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.

If wxyz is a square, which statements must be true? plz < 3