Cumulative Assessment (DT02)

AR.2.2) Rebecca must complete 15 hours of volunteer work. She does 3 hours each day. Write a linear equation in slope-intercept form to represent the hours Rebecca still has to work after x days.

AR.1.1) For the graph of the equation you wrote in the previous question, what does the y-intercept represent?

• hours completed each day

• hours still to complete

• total volunteer hours worked

• days it takes to complete 15 hours

AR.2.1) Melissa buys 2 1/2 pounds of salmon and 1 1/4 pounds of trout. She pays a total of $31.25, and the trout costs $0.20 per pound less than the salmon. What would be the combined cost of 1 pound of salmon and 1 pound of trout?

• $15.60

• $15.80

• $16.60

• $16.80

AR.4.1) Georgia has a budget of $8 for a new notebook. She wants to spend within $5 of her budget, so she uses the equation 0 = |8 − x| − 5 to find the maximum and minimum values. What are the solutions to the equation?

AR.2.2) Dwayne will spend $80 on video games. Used video games cost $10 each, and new video games cost $20 each. What equation in standard form determines the number x of used video games and the number y of new video games he can buy?

AR.2.5) Using the equation in the previous question, select all of the ordered pairs that represent possible combinations of video games that Dwayne can buy.

• (0,4)

• (2,3)

• (1,6)

• (7,2)

• (8,0)

AR.2.6) Solve the compound inequality 3 < 3x + 9 < 24

AR.2.3) What is the slope of a line that is parallel to the line y = −5x + 3?