+7x-8 2. Mary has a small publishing company specializing in romantic poetry Her

Question

+7x-8 2. Mary has a small publishing company specializing in romantic poetry Her fixed cost to roduce s sypical poetry volume is $525, and her cost to produce 2000 copies of the book is $$325, Her books sell for $4.90 each )25 a. Write the linear cost function for Mary's book production. b. Write the linear revenue function for selling her books. c. How many poetry books must she sell in order to break-even? d. How many books must she sell to make a profit of $15007 3. The monthly revenue R achieved by selling x wristwatches is figured to be R(x)=72x . The monthly cost C of making x wristwatches is C(x)-32x+1760 a. Find the cost at the break-even point. b. Determine the profit if 2400 wristwatches are made and sold.

Explanation / Answer

R(x) = 72x
C(x) = 32x + 1760

break-even point
when
R(x) = C(x)
72x = 32x+ 1760
40x = 1760
x = 44

cost = 72* 44 = 3168

b)
profit = R(x) - C(x)
= 40 x -1760
= 40 * 2400 - 1760
= 94240

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