If the diameter of a wheel is 0.5 meters, then the radius of the wheel is how many centimeters

In the coordinate plan (-6,9) b (3,9) c (3,3) def is shown in the coordinate plan below

What are “like terms”? why can we only add like terms?

The revenue each season from tickets at the theme park is represented by t(c)=5x. the cost to pay the employees each season is represented by r(x)=(1.5)^x. examine the graph of the combined function for total profit and estimate the profit after four seasons