Final answer:
Jonathan can buy a maximum of 3 whole pounds of grapes with his $25, while also purchasing 2 more pounds of strawberries than grapes and 2 pineapples.
Step-by-step explanation:
The student's scenario can be modeled with the following inequality:
1.99x + 2.50(x + 2) + 2(2.99) ≤ 25
Where x represents the number of pounds of grapes Jonathan plans to buy. To find the maximum number of whole pounds of grapes he can purchase, we solve for x:
1.99x + 2.50(x + 2) + 5.98 ≤ 25
1.99x + 2.50x + 5.00 + 5.98 ≤ 25
4.49x + 10.98 ≤ 25
4.49x ≤ 25 - 10.98
4.49x ≤ 14.02
x ≤ 14.02 / 4.49
x ≤ 3.12
Thus, Jonathan can buy a maximum of 3 whole pounds of grapes, since we are considering whole pounds only.