AnswersTN-Algebra I A SC 26-27 Elective FocusModeling with Systems of Linear Equations

Modeling with Systems of Linear Equations Answers

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1
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Which system of linear equations has a solution of(1, –1)?

A
y1 and y2
B
y1 and y3
C
y2 and y3
D
y2 and y4
2
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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
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

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
6

Naturally Made needs to sell products to break even.

Answer:

220

7

fiction books

Answer:

19

8

5.2 = ()

A
(x)(y)
B
x/y
C
+ y
D
x – y
9

Aro can paddle at a speed of miles per hour.

Answer:

1.56

10

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
11

Their balances will be the same after weeks.

Answer:

114

12

The cost or revenue when it sells the break-even number of products will be $.

Answer:

1,210

13

nonfiction books

Answer:

7

14

5.2 = ()

A
2.5
B
5.2
C
5
15

The river’s speed is miles per hour.

Answer:

0.52

16

Their balances will be $.

Answer:

114

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