Chapter 1.2, Problem 39E

(a)

To determine

To calculate: The cost equation if the cost of making $20$ cell phones is $\$6800$ and the cost of making $50$ cell phones is $\$9500$.

(b)

To determine

To calculate: The fixed cost if the cost of making $20$ cell phones is $\$6800$ and the cost of making $50$ cell phones is $\$9500$.

(c)

To determine

To calculate: The marginal cost of production if the cost of making $20$ cell phones is $\$6800$ and the cost of making $50$ cell phones is $\$9500$.

(d)

To determine

To graph: The equation $y=90x+5000$.