Cost Function The simplest cost function is the linear cost function, C ( x ) = m x + b , where the y -intercept b represents the fixed costs of operating a business and the slope m represents the cost of each item produced. Suppose that a small bicycle manufacturer has daily fixed costs of $ 90 , and each bicycle costs $ 2000 to manufacture. a. Write a linear model that expresses the cost C of manufacturing x bicycles in a day. b. Graph the model. c. What is the cost of manufacturing 14 bicycles in a day? d. How many bicycles could be manufactured for $ 3780 ?
Cost Function The simplest cost function is the linear cost function, C ( x ) = m x + b , where the y -intercept b represents the fixed costs of operating a business and the slope m represents the cost of each item produced. Suppose that a small bicycle manufacturer has daily fixed costs of $ 90 , and each bicycle costs $ 2000 to manufacture. a. Write a linear model that expresses the cost C of manufacturing x bicycles in a day. b. Graph the model. c. What is the cost of manufacturing 14 bicycles in a day? d. How many bicycles could be manufactured for $ 3780 ?
Cost Function The simplest cost function is the linear cost function,
, where the
represents the fixed costs of operating a business and the slope
represents the cost of each item produced. Suppose that a small bicycle manufacturer has daily fixed costs of
, and each bicycle costs
to manufacture.
a. Write a linear model that expresses the cost
of manufacturing
bicycles in a day.
b. Graph the model.
c. What is the cost of manufacturing 14 bicycles in a day?
Consider the following system of equations, Ax=b :
x+2y+3z - w = 2
2x4z2w = 3
-x+6y+17z7w = 0
-9x-2y+13z7w = -14
a. Find the solution to the system. Write it as a parametric equation. You can use a
computer to do the row reduction.
b. What is a geometric description of the solution? Explain how you know.
c. Write the solution in vector form?
d. What is the solution to the homogeneous system, Ax=0?
2. Find a matrix A with the following qualities
a. A is 3 x 3.
b. The matrix A is not lower triangular and is not upper triangular.
c. At least one value in each row is not a 1, 2,-1, -2, or 0
d. A is invertible.
Chapter 3 Solutions
Precalculus Enhanced with Graphing Utilities (7th Edition)
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