Equation Models

A car rental company charges a flat fee of $50 plus $0.25 per mile. Write an equation to represent the total cost (C) for renting a car for x miles.

• C = 0.20x + 60

• C = 0.25x - 50

• C = 0.25x + 50

• C = 0.50x + 25

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

A phone plan costs $20 per month plus $0.10 per minute. Write an equation to represent the total cost (C) for using x minutes in a month.

• C = 20 - 0.10x

• C = 20x + 0.10

• C = 0.10x - 20

• C = 20 + 0.10x

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

A store sells jeans for $40 each. Write an equation to represent the total cost (C) if a customer buys x jeans.

• C = 40 - x

• C = 40 / x

• C = 40x

• C = 40 + x

Tags

CCSS.HSF-BF.A.1A

The graph shows a line of best fit for data collected on the amount of income earned by lawn companies in relation to the number of yards mowed.  What is the best equation of the line of best fit?

• y = 30x

• y = 30x + 300

Tags

CCSS.HSF.LE.B.5

Green boxes are equal to 1 and red boxes are equal to -1. Solve for x.

• 12 = 3x + 6

• 12 = 3x - 6

• -12 = 3x -6

• 12 = -3x -6

Tags

CCSS.7.EE.B.4A

What is the best equation for the trend line?

Tags

CCSS.8.EE.B.5

What is the best equation of the line of best fit?

• y= 2x+3

• y=3x+2

What is the equation of the trend line?

Tags

CCSS.8.EE.B.5

Which of these equations could be represented by this model?

• 3x = 9

• x + 3 = 9

• x = 12

• 2x + 3 = 10

Which equation best matches the graph shown?

• y = 4x

• y = 4x - 3

• y = 4/3 x + 4

• y = 4/3 x - 3

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2