AnswersCA-Mathematics ISolving Systems of Linear Equations: Linear Combinations

Solving Systems of Linear Equations: Linear Combinations Answers

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1
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The cost function that represents the situation is .

A
C(x) = 3.00x
B
C(x) = 550 + 3.00x
C
C(x) = 3.00 + 550x
D
C(x) = 550 – 3.00x
2
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5.2 = ()

A
2.5
B
5.2
C
5
3

5.2 = ()

A
(x)(y)
B
x/y
C
x + y
D
– y
4

5.2 = ()

A
2.5
B
5.2
C
5
5

5.2 = ()

A
(x)(y)
B
x/y
C
+ y
D
x – y
6

5.2 = ()

A
(x)(y)
B
x/y
C
x + y
D
– y
7

Manuel and Ruben both have bank accounts. The table represents the balance, y, for each account after x weeks. Which system of equations represents the table?

A
y = 11.5x and y = –13x
B
y = 11.5x + 218 and y = –13x + 22
C
y = 11.5x + 22 and y = –13x + 218
D
y = 22x + 11.5 and y = 218x – 13
8

The cost function that represents the situation is .

A
C(x) = 3.00x
B
C(x) = 550 + 3.00x
C
C(x) = 3.00 + 550x
D
C(x) = 550 – 3.00x
9

5.2 = ()

A
(x)(y)
B
x/y
C
+ y
D
x – y
10

The revenue function that represents the situation is .

A
R(x) = 3.00x
B
R(x) = 5.50 + x
C
R(x) = 5.50 – x
D
R(x) = 5.50x
11

5.2 = ()

A
2.5
B
5.2
C
5

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