Evaluate the expression for x= 9
5x + 3

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *