Write the rate as a unit rate.

5 shirts cost $75.00

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!

There is 240 red cars and there is 400 blue cars because 240/3=80 and 80*5=400