The most Kayla can spend on hot dogs and buns for her cookout is $35. A package of 10 hot dogs costs $3.50. A package of buns costs $2.50 and contains 8 buns. She needs to buy at least 40 hot dogs and 40 buns.
a) Create a system of inequalities
b) Give an example of three different purchases she can make.
*HINT: Graph the system of inequalities