Final answer:
If Jenny has 4 apples and Tommy has 3 times as many apples as Jenny, Tommy has B. 12 apples.
Step-by-step explanation:
To find out how many apples Tommy has, we can set up an equation. Let's represent Tommy's number of apples as T. We are given that Tommy has 3 times as many apples as Jenny, so Tommy's number of apples is 3 times Jenny's number of apples. If Jenny has 4 apples, then we can substitute this value into the equation to solve for T. T = 3 * 4 = 12. Therefore, Tommy has 12 apples, which corresponds to answer choice B.