Question

hiro and lisa are photographers. they take pictures of seniors for high school yearbooks. they charge a stander fee for taking the pictures. there's also a change for each sets of prints determines the cost sets of prints : total cost: 0 $30 1 $50 2 $70 3 $90 let s stand for the sets of prints ordered. write the ruel that describes a students total cost.

Answer 1

hi :)