21. BASEBALL CARDS Cristiano bought 24 baseball cards for $50. One type costs $1 per card, and the other cost $3 per card. Define the variables, write equations, and solve to find the number of each type of card he bought.

this is a good question! i’ll do some research and what i find, i’ll contact you asap when i have something! ✊

i think you would have to divide the money he had saved, which is $2,000 by the time he plans on exercising which is 40 hours, and the answer you get should tell you the answer to your question.