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) cost or apples (f)

0

1

2

3

4

5

6


10

x

Answer 1

To express the total cost of apples in terms of the number of pounds \( x \), you can write the function rule \( f \) as follows:

\[
f(x) = 1.25x
\]

where \( f(x) \) is the total cost of apples in dollars and \( x \) is the number of pounds.

Now, let's complete the table for the number of pounds and the corresponding cost using the function:

| Number of Pounds (x) | Cost of Apples (f) |
|-----------------------|---------------------|
| 0 | f(0) = 1.25 * 0 = $0.00 |
| 1 | f(1) = 1.25 * 1 = $1.25 |
| 2 | f(2) = 1.25 * 2 = $2.50 |
| 3 | f(3) = 1.25 * 3 = $3.75 |
| 4 | f(4) = 1.25 * 4 = $5.00 |
| 5 | f(5) = 1.25 * 5 = $6.25 |
| 6 | f(6) = 1.25 * 6 = $7.50 |
| 10 | f(10) = 1.25 * 10 = $12.50 |

So, in summary:

\[
f(x) = 1.25x
\]
is the function that describes the cost of apples based on the weight in pounds.