-A guitar factory has fixed production cost of $50,000 plus $75 for each guitar produced.Its cost of production function can be written asC(x) = 75x+ 50,000.

The company decides to sell each guitar for $325, so its revenue function can be written asR(x)=325x.

How many guitars must the company sell at $325 per guitar in order to "break even"?

-When hired at a new job selling electronics, you are given two pay options:

• Option A: Base salary of $14,000 a year with a commission of 10% of your sales
• Option B: Base salary of $20,000 a year with a commission of 4% of your sales.

After what amount of your sales (in $) does option A produce a larger paycheck for you?

-A moving company charges a flat rate of $150, and an additional $5 for each box.A delivery service would charge $20 for each box. After how many boxes would it be cheaper to use the moving company?