A piano manufacturer has a daily fixed cost of $1,400 and a marginal cost of $1,700 per piano. Find the cost C(x) of manufacturing x pianos in one day.

C(x) =

Use your function to answer the following questions.

(a) On a given day, what is the cost of manufacturing 3 pianos?

$

(b) What is the cost of manufacturing the 3rd piano that day?

$

(c) What is the cost of manufacturing the 11th piano that day?

$

(d) What is the variable cost?

$

What is the fixed cost?

$

What is the marginal cost?

$

(e) Graph C as a function of x. HINT [See Example 1.]