Discussion:
Q: A small gift shop is trying to determine the number of gift items it can sell to maintain a monthly revenue greater than $10,000. The revenue function for this business is R = -0.10N2 +70N, where R=monthly revenue and N=number of gift items sold per month.
a. Write the inequality for what this business is trying to achieve.
b. Solve the inequality to determine how many gift items, N, can be sold per month to keep the inequality true. Show your work.
c. Graph this solution on a number line.