Final answer:
Heather spent $33.10 on school supplies, which is calculated based on the given information that Zachary spent $2.30 more than Melinda's $14.25, and Heather spent twice as much as Zachary.
Step-by-step explanation:
The student's question pertains to a word problem that requires solving a series of arithmetic calculations related to the expenditure of three individuals: Melinda, Zachary, and Heather.
Melinda spent $14.25 on her school supplies. Zachary spent $2.30 more than Melinda, which results in Zachary spending $14.25 + $2.30 = $16.55. Heather spent 2 times as much money as Zachary spent, so her expenditure would be 2 times $16.55, resulting in $16.55 * 2 = $33.10. Therefore, Heather spent $33.10 on school supplies.