Final answer:
Henry has 56 walnuts but needs 72 to decorate 2 dozen cupcakes at 3 walnuts each, so he does not have enough.
Step-by-step explanation:
Henry needs to determine if he has enough walnuts to decorate 2 dozen cupcakes, with each cupcake requiring 3 walnuts for decoration. A dozen is equivalent to 12, so 2 dozen would be 24 cupcakes.
To calculate the total number of walnuts required to decorate 24 cupcakes, we multiply the number of cupcakes by the number of walnuts per cupcake:
24 cupcakes × 3 walnuts per cupcake = 72 walnuts needed
Since Henry only has 56 walnuts, he does not have enough to decorate 2 dozen cupcakes. He would need an additional 16 walnuts to have enough for all the cupcakes.