Question

The total number of cups of flour (f) that Jazmein has left after baking n number of cakes is given by the equation f = -9n + 80. If Jazmein has 17 cups of flour left, how many cakes did she bake?

a) 7
b) 8
c) 9
d) 10

Answer 1

To determine the number of cakes Jazmein baked, substitute 17 for f in the equation f = -9n + 80 and solve for n. The solution is n = 7, indicating Jazmein baked 7 cakes.

Step-by-step explanation:

To solve for the number of cakes Jazmein baked using the equation f = -9n + 80, where f represents the total number of cups of flour Jazmein has left, we need to substitute f with 17 (since Jazmein has 17 cups of flour left) and solve for n (the number of cakes).

Substituting the values we get:

• 17 = -9n + 80

Next, to find n:

• 17 - 80 = -9n
• -63 = -9n
• n=63/9
• n = 7

Therefore, Jazmein baked 7 cakes.