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Question
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 and solve an inequality for the number of sales you need to make.
Responses
A 100 - 3s ≤ 160; s ≤ 20100 - 3s ≤ 160; s ≤ 20
B 100 + 3s ≥ 160; s ≥ 18100 + 3s ≥ 160; s ≥ 18
C 100 - 3s ≤ 160; s ≤ 18100 - 3s ≤ 160; s ≤ 18
D 100 + 3s ≥ 160; s ≥ 20
A is incorrect. The inequality 100 - 3s ≤ 160 should be 100 + 3s ≤ 160.
B is correct. The inequality 100 + 3s ≥ 160 represents the condition that the salesperson wants their pay to be at least $160.
C is incorrect. The inequality 100 - 3s ≤ 160 should be 100 + 3s ≤ 160.
D is incorrect. The inequality 100 + 3s ≥ 160 should be 100 - 3s ≥ 160.