Question

Apples at the local farmer's market cost $1.25 per pound.

Write a function rule`f` that gives the total cost of apples in terms of the number of pounds, `x`.
f(x)=

Number of pounds (x): 0, 1, 2, 6, 10, x.
Cost of apples (f):

Answer 1

To determine the total cost of apples based on the number of pounds \( x \), we can define a function \( f \) that multiplies the cost per pound by the number of pounds. Given that the cost per pound is $1.25, the function can be expressed as:

\[
f(x) = 1.25 \times x
\]

### Example Calculations:
- For \( x = 0 \):
\[
f(0) = 1.25 \times 0 = 0
\]
- For \( x = 1 \):
\[
f(1) = 1.25 \times 1 = 1.25
\]
- For \( x = 2 \):
\[
f(2) = 1.25 \times 2 = 2.50
\]
- For \( x = 6 \):
\[
f(6) = 1.25 \times 6 = 7.50
\]
- For \( x = 10 \):
\[
f(10) = 1.25 \times 10 = 12.50
\]

### General Function:
Thus, the function rule for the cost of apples is
\[
f(x) = 1.25x
\]

### Summary of Costs:
- Number of pounds (x): 0, 1, 2, 6, 10
- Cost of apples (f):
- \( f(0) = 0 \)
- \( f(1) = 1.25 \)
- \( f(2) = 2.50 \)
- \( f(6) = 7.50 \)
- \( f(10) = 12.50 \)