CCSS.Math.Content.8.F.B.4

Write an equation that models the following situation:
Samantha's hair was known to grow very rapidly. It began at a length of 6 in and grew at a rate of 14% a week.

• y=6(0.14)^x
• y=6(1+14)^x
• y=6(1.14)^x
• y=6(0.86)^x

Tags

CCSS.Math.Content.8.F.B.4

Describe the situation: Joanna is paid $14 per hour.

• Linear & Proportional
• Linear & Nonproportional
• Nonlinear & Proportional
• Nonlinear & Nonproportional

Tags

CCSS.Math.Content.8.F.B.4

Sandra has a $20 itunes gift card and spends $3 each month.  Which equation can be used to find how much money Sandra has on her giftcard after x months?

• y = 3x + 20
• y = 3 + 20x
• y = -3x + 20
• y = -20x + 3

Tags

CCSS.Math.Content.8.F.B.4

During a snowstorm, John measured the total snowfall accumulated at the end of each hour.  He recorded his results in the table below.  What is the approximate average rate of change of the snowfall between 1 p.m. and 6 p.m.?

• 0.7 inch/hour
• 0.9 inch/hour
• 1.1 inch/hour
• 1.4 inch/hour

Tags

CCSS.Math.Content.8.F.B.4

Find the slope of the line that passes through the points (2, 4) and (6, 12)

• 1/2
• -1/2
• 2
• -2

Tags

CCSS.Math.Content.8.EE.B.6

CCSS.Math.Content.8.F.B.4

What does the y-intercept (which is 20) represent in this situation?

• The cost per game 
• The initial charge of renting games 
• The cost of the first game 

Tags

CCSS.Math.Content.8.F.B.4

A plant is 5cm tall and growing at a rate of 3cm a month.

• y = 5 + 3
• y = 5x + 3
• y = 3x + 5
• y = 3x + 5x

Tags

CCSS.Math.Content.8.F.B.4

describes how a quantity is changing over time

• Vertical Shift
• Rate of Change
• Vertical Line
• Verbal Description

Tags

CCSS.Math.Content.8.F.B.4

Bob's Plumbing charges $15 per hour plus a service fee of $40 for coming out to your house. Which equation models this situation?

• y = 15x + 40

• y = 40x + 15

• y = 15x

• y = 15x - 40

Tags

CCSS.Math.Content.HSA.CED.A.1

CCSS.Math.Content.8.F.B.4

Find the slope of the line that passes through the points (2, 4) and (6, 12)

• 1/2
• -1/2
• 2
• -2

Tags

CCSS.Math.Content.8.F.B.4