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.
1. She paid .2 per magazine, so .2*number of magazines = 10. So the number of magazines she bought was 10/.2, or 50. Since that was only half of them, there were 100 total. 2. a d=.2m b. You make a function table. Just plug the points into d=.2m