1st? - cynthia paid $0.20 per hobby magazine at a tag sale. she bought half of all the magazines that were for sale and paid $10. how many magazines were there in all?
2nd? -in the first problem, the amount of money cynthia pays is a function of the number of magazines she bought.
a- write an equation that shows what cynthia pays dollars (d) for the number of magazines (m) shes buys.
b- make a function table with four (m, d) pairs of your choosing that satisfy the function.