The average cost for printing x copies of a self-published paperback book with Company A is ()=120+4 c
(
x
)
=
120
+
4
x
x
. The average cost for printing x copies of a paperback book with Company B is ()=25+102
d
(
x
)
=
25
+
10
x
2
x
.

1. Which company would you recommend to an author who wants to print 100 books? Explain your reasoning.

2. Which company would you recommend to an author who thinks their book will be a best seller and needs to print thousands of books? How could you rewrite the equations to make the choice clearer?

The depreciation per unit for a company

Apatient is given 50 mg dose of medicine the medicines effectiveness decreases every hour at a constant rate of 40% what is the exponential decay function that models this scenario how much medicine will be left in the patients system after 2 hours

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.