The weekly production cost C of manufacturing x watches is given by the formula C = 4000 + 2x, where C is in dollars.

A. What is the cost of producing 3000 watches?

B. What is the cost producing 4000 watches?

C. Replace C with y to become a linear equation and graph

the equation.

Questions:

1. For A and B above, must I replace x with 3000 and then 4000, respectively, to find the cost C?

2. For C, the given formula become y = 4000 + 2x. Yes?

I must then graph y = 4000 + 2x on the xy-plane? True?