Suppose you buy flour and cornmeal in bulk to make flour tortillas and corn tortillas. Flour costs $1.50/lb. Cornmeal costs $2.50/lb. You want to spend less than $9.50 on flour and cornmeal, and you need to at least 4 lb altogether.
a. Write a system of inequalities that describes this situation.
b. Graph the system to show all possible solutions.
Thanks.