As a salesperson, you are paid $100 per week plus $3 per sale. This week you want your pay to be at least $160. Write an inequality for the number of sales you need to make, and describe the solutions.
A) 100 - 3s ≤ 160; s ≤ 20
B) 100 + 3s ≥ 160; s ≥ 18
C) 100 - 3s ≤ 160; s ≤ 18
D) 100 + 3s ≥ 160; s ≥ 20