To determine how many pounds of apples Bill can buy with $5, we can set up an equation based on the cost per pound and the total amount he has to spend.
The equation can be set up as follows:
\( 1.25x = 5 \)
where:
- \( 1.25 \) is the cost per pound of apples,
- \( x \) is the number of pounds of apples,
- \( 5 \) is the total amount of money Bill has.
So the correct response from the options provided is:
1.25x = 5