To find the total profit for Juan after running his lemonade stand for the additional 3 days, we need to use an expression that reflects his earnings and expenses.
Let's analyze the choices provided:
- (16 - 7 + 22 - 12 + 18 - 9)
This expression combines earnings and expenses correctly.
- (16 + 22 + 18 + 7 - 12 - 9)
This expression adds expenses incorrectly because expenses should be subtracted, not added.
- (16 + 22 + 18 + 7 + 12 + 9)
This expression incorrectly adds expenses.
- (16 - 7 - 22 - 12 - 18 - 9)
This expression incorrectly subtracts all values rather than properly structuring the earnings minus expenses.
The correct expression for total profit should include adding all earnings and subtracting all expenses. Therefore, the correct answer from the given options is:
(16 - 7 + 22 - 12 + 18 - 9)
Calculation of Total Profit
Let's break it down:
-
Day 1 Profit:
Profit = 12 (initial profit)
-
Day 2:
Earnings: $16
Expenses: $7
Profit = 16 - 7 = $9
-
Day 3:
Earnings: $22
Expenses: $12
Profit = 22 - 12 = $10
-
Day 4:
Earnings: $18
Expenses: $9
Profit = 18 - 9 = $9
Now we can calculate the total profit:
\[
\text{Total Profit} = \text{Initial Profit} + \text{Day 2 Profit} + \text{Day 3 Profit} + \text{Day 4 Profit}
\]
\[
\text{Total Profit} = 12 + 9 + 10 + 9 = 40
\]
However, we will also total using the expression:
\[
= (16 - 7) + (22 - 12) + (18 - 9) + 12
\]
\[
= 9 + 10 + 9 + 12 = 40
\]
It appears that the final options you presented as values for the total profit do not include $40.
Please check if there might be any other profits or expenses you intended to include, or let me know the amounts for profitability verification.