Linear Functions, Linear Equations, Systems and Inequalities

• If no adult chaperones were needed, 30 students could go to the zoo.

• If ten students go to the zoo, then 15 adults can go.

• If 16 adults go to the zoo, then 6 students can go.

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A student has started a lawn care business. He charges $15 per hour to mow lawns and $20 per hour for gardening. Because he is still in school, he is only allowed to work for at most 20 hours per week. His goal is to make at least $300 per week. Which system of inequalities models the situations, if y=hours gardening and x= hours mowing?

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