A bookstore marks up the price of a book by 40% of the cost from the publisher. Therefore, the bookstore’s price to the student, P ( x ) ( in $ ) after a 7.5% sales tax, is given by P ( x ) = 1.075 ( x + 0.40 x ) , where x is the cost of the book from the publisher. Evaluate P ( 60 ) and interpret the meaning in the context of this problem.
A bookstore marks up the price of a book by 40% of the cost from the publisher. Therefore, the bookstore’s price to the student, P ( x ) ( in $ ) after a 7.5% sales tax, is given by P ( x ) = 1.075 ( x + 0.40 x ) , where x is the cost of the book from the publisher. Evaluate P ( 60 ) and interpret the meaning in the context of this problem.
Solution Summary: The author calculates the value of P(60) and interprets it. If the bookstore's price to the student is 60, then the total price of the book including sales tax
A bookstore marks up the price of a book by 40% of the cost from the publisher. Therefore, the bookstore’s price to the student,
P
(
x
)
(
in $
)
after a 7.5% sales tax, is given by
P
(
x
)
=
1.075
(
x
+
0.40
x
)
, where x is the cost of the book from the publisher. Evaluate
P
(
60
)
and interpret the meaning in the context of this problem.
Employees of a publishing company received an increase in salary of 3% plus a bonus of $1,100. Let S(x) = 1.03x + 1100 represent the new salary in terms of the previous salary, x. Find and interpret S(19,000).
Suppose you plan to upgrade a new phone when your IPhone X loses half of its value. Use P(t) to determine algebraically in how many months this will happen. Show all work.
P(t)=720(.9692)t
For f(x) = 8x and g(x) =x+ 4, find the following functions.
a. (fo g)(x); b. (g o f)(x); c. (f o g)(4); d. (g o f)(4)
a. (fo g)(x) =|
(Simplify your answer.)
%3D
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