Question

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 at least 4 lb altogether. Write a system of inequalities that describes this situation.

I wrote my two equations:

1.x+y¡Ý4
4¡Ý-x+4

2. 1.5x+2.5y<9.5
1.5x+2.5(-x+4)<9.5
1.5-2.5x+10<9.5
-x+10<9.5
-x<9.5-10
-x<-0.5
x>0.5

I solved the 2nd equation, but what am I supposed to do with the first one now?

Answer 1

never mind, i get it, i wasn't supposed to solve any equations at all..

Answer 2

54x^2y^13/-2x^5y^-2