Julie is at the store buying groceries. She needs to get a quart of orange juice and some peaches. The quart of orange juice cos
ts $2.25, and the peaches are $0.75 each. The function f(x) = 0.75x + 2.25 represents Julie's expenses at the grocery store. What do the f(x) and the x represent?
f(x) is the total cost and x is the number of peaches.
We know that each peach costs $0.75. This means the expression 0.75x represents the total cost of peaches; this makes x represent the number of peaches.
We also know that $2.25 is the cost of juice. Adding it to the cost of peaches gives us the total cost; this means f(x) represents the total cost.
