Math STAAR Review- RC 2

The graph below shows the amount of water in a swimming pool. The water is being pumped out so that the pool can be resurfaced. Which of these statements does the y-intercept support?

• After 9 hours, the pool was empty
• The pump removes 1,000 gallons of hour per hour.
• Initially, there were 9,000 gallons of water in the pool.
  
  
• It will take 9,000 hours to completely empty the pool

What is the rule for this linear function?

• y=0.5x+1
• y=-0.5x+1
• y=-2x+1
• y=2x-4

What equation could be written for this table?

• y=-4x
• y=-4x-1
• y=-2x-1
• y=-1+6x

Which of the following relations is a function?

• I, III, and IV only
• I and IV only
• II and III only
• I only

A local theater group sells individual tickets to performances for $10 each.  There are 25 season ticket holders who pay for the performances in advance.  Which equation represents the amount of money, M, brought in during one month through the sale of individual tickets?

• M = 25t + 10
• M = 10t + 25
• M = 10t + 250
• M = 250t + 10

Which of the graphs represents a function?

• A
• B
• C
• D

An auto mechanic's pay varies directly with the number of hours worked.  The mechanic makes $765 for 9 hours of work.  Which table best represents this relationship?

• F
• G
• H
• J

At one point during the summer, Marsha has read 500 pages of her summer reading assignment, and Juan has read 460 pages.  Marsha reads 20 pages per week for the remainder of the summer, and Juan reads 30 pages per week for the remainder of the summer.  How many weeks, w, will it take before the girls have read the same number of pages?

• 500 + 30w = 460 + 2w
• 30 + 500w = 20 + 460w
• 20 + 500w = 30 + 460w
• 500 + 20w = 460 + 30w

Celina deposited money into her savings account to save money for a vacation.
The table shows her account balance during March.  If Celina creates a graph for this data, what will be the slope? 

• 1/15
• 15
• 30
• 65

What equation could represent the situation shown in this model? What is the value of x? 

• 9x+4=24+x; x=2.5
• 9x=24+x; x=3
• 9x+4=24+x; x=3.5
• 4x=24; x=6