Practice 2/28-3/4

What is the solution to  $-\left(6m+18\right)=4\left(17-m\right)$ ?

Based on the graph, which of the following conclusions is true? 

• Everyone ran faster than 6 meters per second.
• The best possible rate for the 100-meter dash is 5 meters per second. 
• The first place runner was four times as fast as the fourth place runner. 
• The second-place and third-place runners were closest in time to one another. 

• F

• G

• H

• J

The box below shows the number of kilowatt-hours of electricity used last month at each of the houses on Harris Street. 
What is the mode of these data? 

• 560
• 580
• 590
• 640

What are the x- intercepts?

• x= 0 and x= -4
• x= 0 and x= 4
• y= 0
• x= 2

A survey explored the relationship between gender and band class. Which is a reasonable conclusion?

• There are more band members than non-band members
• There are more boys in the class than girls
• There are more boys in band than not in band
• More than half of the bands members in the class are girls

What is the solution?

• (1, -1)
• (-1, 1)
• (0, -2)
• (2, 0)

Which ordered pair satisfies both equations below for x and y? 

• (-1, -4)
• (-2, -3)
• (3, 2)
• (4, 1)

Simplify.
2x² + (4x - 6x²) + 9 - (6x + 3)

• -4x² - 2x + 12
• 4x² + 2x - 6
• -4x² - 2x + 6
• -4x² + 10x + 12

Find the error in the problem below
19 - 2k = 3k - 1
     +3k   +3k
19 + 1k = -1
-19           -19
k = -20

• They should have divided by 1 for the last step
• They should add 19 instead of subtracting 19
• I can not find an error
• Instead of adding 3k they should subtract 3k