This year a zoo will sell `a`,000 tickets. This number is in…
This year a zoo will sell `a`,000 tickets. This number is increasing by `b`00 tickets per year. The price of a ticket currently $`c`0 and is increasing by $`d` per year. At what rate is the revenue of the zoo changing this year? Units of your answer should be dollars per year. Round your answer to the nearest whole number, and do not include units in the box. Desmos (click to reveal)