Answer:
Step-by-step explanation:

At 5 pm Jamie will arrive at the party
1. I believe she would have 15 cups of fruit salad because it’s 5 cups of grapes, 6 cups strawberries(1 pint = 2 cups which means 6 cups of strawberries) and 4 cups of watermelon (1 pint = 4 cups
2. Since there are 15 cups of fruit salad you would need to divide 15 by the number of friends which would make it 2.5 cups of fruit salad per person
5.1 in
Since the area of a square is s^2, you can take the square root of 26 to find the answer