Mindy buys 12 cupcakes. Nine of the
cupcakes have chocolate frosting and the
rest have vanilla frosting. What fraction
the cupcakes have vanilla frosting?

Step-by-step explanation:

3/9 or 1/3(in simplified form) of the cupcakes have vanilla frosting.

1/4

Step-by-step explanation:

9 Chocolate cupcakes, 9/12

3 Cupcakes are the remaining cupcakes, over 12 it's 3/12

Then Simplify, 3/12

by dividing

3 divided by 3 equals 1

12 divided by 3 equals 4

then use the simplified version 1/4

To check:

add 3/12 + 9/12

and it equals all 12 cupcakes

b is the correct answer

that would be a prism, if not right, feel free to correct me