We are given
Richard spent over $220 at an office supply store
so, total money spent over =$220
He bought x reams of paper for $9 each
So, money spent on paper is
![=9x](https://tex.z-dn.net/?f=%3D9x)
eight boxes of pens for $5 each
so, money spent on pens is
![=5\times 8](https://tex.z-dn.net/?f=%3D5%5Ctimes%208)
![=40](https://tex.z-dn.net/?f=%3D40)
now, we can find total money spent
so, total money spent is
![=9x+40](https://tex.z-dn.net/?f=%3D9x%2B40)
now, we are given maximum money he can spent over $220
we get
![9x+40\geq 220](https://tex.z-dn.net/?f=9x%2B40%5Cgeq%20220)
So, inequality is
![9x+40\geq 220](https://tex.z-dn.net/?f=9x%2B40%5Cgeq%20220)
now, we can solve for x
Subtract both sides by 40
![9x+40-40\geq 220-40](https://tex.z-dn.net/?f=9x%2B40-40%5Cgeq%20220-40)
![9x\geq 180](https://tex.z-dn.net/?f=9x%5Cgeq%20180)
Divide both sides by 9
![x\geq 20](https://tex.z-dn.net/?f=x%5Cgeq%2020)
Interpretation:
Since, x is the number of reams of paper
so, he can buy more than 20 reams of paper...........Answer