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Using Functions to Answer Real-World Questions

4.12.5 Using Functions to Answer Real-World Questions

4.12.5 • Using Functions to Answer Real-World Questions

Cool Down

Diego’s club earns money for charity when members of the club perform community service after school. For each student who does community service, the club earns $5. There are 12 students in the club.

The total dollar amount earned, EE, is a function of the number of members who perform community service, nn.

1.

Is 5 a possible input value? Why or why not?

Compare your answer:

n=5n=5 is possible. It means that 5 students perform community service.

2.

Is 24 a possible output value? Why or why not?

Compare your answer:

No, 24 is not possible as an output value. An output value has to be a multiple of 5.

3.

Describe the domain of this function.

Compare your answer:

All integers from 0 to 12

4.

Describe the range of this function.

Compare your answer:

Multiples of 5 from 0 to 60