Question

An ice cream parlor offers ice cream sundaes for a base price of $6.00, plus an additional charge for each topping customers add. Elaine pays $7.00 for a sundae with two toppings, and Jacob pays $8.50 for a sundae with five toppings.

Which equation could be used to represent the situation?
Responses

A. y=5x+6

B. y=0.50x+6

C. y=0.75x+6

D. y=0.3x+6

Answer 1

B. y=0.50x+6

Explanation:

By subtracting the base from Elaine's sundae you are left with the additional charge per topping. Elaine chose 2 toppings and paid $1. By dividing $1 by 2 toppings, you get $0.50 per topping.

This can be proved by solving Jacob's equation. Subtracting the base, you are left with $2.50. We know he got 5 toppings, so we divide $2.50 by 5 and we get $0.50 per topping.