Question

During a fundraiser, students in Math Club make a $0,50 profit for every candy bar

they sell
Let n represent the number of candy bars the club sells.
Lett represent the total profit earned, in dollars.
What is the total profit earned for selling 10 candy bars?


I got two answer when I solved it but I’m not sure which one is correct

Here what I got

For the first time I tried it
0.50x10=5
Or
0.50+0.50 +0.50 +0.50 0.50 +0.50+0.50+0.50+0.50= 4.5

I’m not sure if I’m correct or which is the right answer can someone expían ?

Answer 1

profit(n) = n * .50

Profit(10) = 5.00

Explanation:

Profit = amount of candy bars sold * profit per candy bar

profit(n) = n * .50

Let the number of candy bars sold be 10 ( n=10)

Profit(10) = 10 * .50

= 5.00

When you added you only added 9 .50 terms which is why you only got 4.50 for your answer.