Review 12.14

A climber is on a hike. After 2 hours he is at an altitude of 400 feet. After 6 hours, he is at an altitude of 700 feet. What is the average rate of change? 

• 200
• 150
• 300
• 75

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6

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

• 1/2
• -1/2
• 2
• -2

Tags

CCSS.8.EE.B.5

^{What is the solution?}

• (1, 1)

• (0, 1)

• (0, –2)

• (1, –1)

x – y = 11

2x + y = 19

• (10, –1)

• (–1, 10)

• (3, –4)

• (6, 7)

Solve for both x and y, but list only your answer for y below.

3x + 6y = 18

6x + 60y = 84

• y = 1

• y = 2

• y = 3

• y = 4

Match the inequality to the word problem.

Katie wants to have at least $200 in her bank account by the end of the month. She currently has $25 in her bank account. Katie makes $12 for each dog that she walks. How many dogs would Katie have to walk to reach her goal of $200?

• 25 - 12x ≥ 200
• 25 + 12x ≥ 200
• 13x ≥ 200
• 25 + 12x > 200

Write an Equation.
The enrollment at the University of Texas, Austin, in 2011 was 51,112. This was 11,245 more than the enrollment at Texas A&M University. What was the enrollment at Texas A&M University?

• x + 11,245 = 51,112
• 11,245x = 51,112
• x/11,245 = 51,112
• x - 11,245 = 51,112

Write an Equation.
A pet store has 19 goldfish tanks. The store can place 12 fish in each tank. How many goldfish can it keep?

• x/19 =12
• 12x = 19
• x + 19 = 12
• x - 12 = 19

What inequality does the number line graph represent?

• x ≥ 3
• x > 3
• x < -3
• x ≤ -3

Tags

CCSS.6.EE.B.8

Which represents the word sentence as an inequality?
A number w is smaller than 5.

• w < 5
• w > 5
• w ≤ 5
• w ≥ 5

Tags

CCSS.6.EE.B.8