Answer:
The student council needs to sell 38 candy bars so that the money they spend is the same amount as they make.
Step-by-step explanation:
You have to write an expression where the price they spent that includes the money to rent a booth and the amount paid for each candy bar for the number of candy bars purchased is equal to the money spent that is the price at which they sell the candy bars for the number of candy bars sold:
173+0.45x=5x, where x is the number of candy bars
Now, you can solve for x:
173=5x-0.45x
173=4.55x
x=173/4.55
x=38
According to this, the answer is that the student council needs to sell 38 candy bars so that the money they spend is the same amount as they make.