Kinah works in a bakery and is making peach pies. She makes 40 pies and uses 6 peaches for each pie. The number of peaches that she uses to make the pies is a function of the number of pies that she makes.

Which of these statements describe the domain or range of this function? Select two that apply.
A
.

The range is the set of all integers from 0 to 40.

B.

The domain is the set of all integers from 0 to 40.

C.

The range is the set of all multiples of 6 from 0 to 240.

D.

The domain is the set of all multiples of 6 from 0 to 240.

1 answer

To analyze the function that describes the number of peaches used in relation to the number of pies made, let’s break down the situation:

Kinah makes 40 pies and uses 6 peaches for each pie. Therefore, the total number of peaches used is:

\[ \text{Total peaches} = \text{Number of pies} \times \text{Peaches per pie} = n \times 6 \] where \( n \) is the number of pies.

The domain of this function (the number of pies that Kinah can make) ranges from 0 to 40, as she can make no pies (0) or up to 40 pies.

The range of this function (the total number of peaches used) goes from 0 (if no pies are made) to 240 (if 40 pies are made). To find the range values, we calculate the total number of peaches for each integer \( n \) from 0 to 40. Since she uses 6 peaches per pie, the total would be in the set of multiples of 6:

\[ \text{Total peaches} = 0, 6, 12, 18, \ldots, 240 \]

This shows that the range will be all multiples of 6 between 0 and 240.

Now, looking at the options:

A. The range is the set of all integers from 0 to 40.

  • This is incorrect. The range represents the total number of peaches used, not the number of pies.

B. The domain is the set of all integers from 0 to 40.

  • This is correct. The number of pies can be any integer value from 0 to 40.

C. The range is the set of all multiples of 6 from 0 to 240.

  • This is correct. The total number of peaches used is in multiples of 6 ranging from 0 to 240 (i.e., 0, 6, 12, ..., 240).

D. The domain is the set of all multiples of 6 from 0 to 240.

  • This is incorrect. The domain is not restricted to multiples of 6; it simply spans all integers between 0 and 40.

Therefore, the two correct statements are B and C.