Question

A yogurt with 1 topping is sold for $3.65. Additional toppings can be added for $0.45 cents each. If y represents the total cost and x represents the total number of toppings added, which function rule describes this pattern?
A y=0.45x+3.65
B y=3.65+0.45(x-1)
C y=3.65+0.45(x+1)
D y=3.65(x-1)+0.45

Answer 1

Hi!

The correct answer is B. y = 3,65 + 0,45(x-1)

It's because we sure have constant value of $3,65, which is the price of yoghurt with one topping, and we have a $0,45 for every added topping, but we have x-1 next to that because we have one topping included in the price for the yoghurt.

Hope this helps!