John is selling candy bars the equation is p=c^2+2c-5 determines the profit, p, where c is the number of candy bars sold what is the minimum number of candy bars he needs to sell to make profit

2

Step-by-step explanation:

Find the value of c where p = 0.

0 = c² + 2c - 5

6 = c² + 2c + 1

6 = (c + 1) ²

±√6 = c + 1

c = - 1 ± √6

c must be positive, so c = - 1 + √6 ≈ 1.45. So John must sell at least 2 candy bars to make a profit.

We can also show this using trial and error.

If c = 0, then p = - 5

If c = 1, then p = - 2

If c = 2, then p = 3