### General Information

**Related Standards:**MAFS.912.A-CED.1.3

**Reporting Category:**Algebra: Creating Equations

**Type:**MC: Multiple Choice

**Difficulty:**N/A

**Question:**

The production cost, C, in thousands of dollars, for a toy company to manufacture a ball is given by the model C(x)=75+21x-0.72x², where x is the number of balls produced in one day, in thousands. The company wants to keep its production cost at or below $125,000. The graph shown models the situation.

What is a reasonable constraint for the model?

**Answer Options:**

A.

B.

C.

D.

**Answer Key:**

D