Document

013_024_CC_A_AMC2_C01_662328.indd Page 23
3/6/12
7:47 AM s-019
/Volumes/102/GO00864_AM_R1/MIDDLE_SCHOOL_MATH/NATIONAL/ANCILLARY..
/Volumes/102/GO00864_AM_R1/MIDDLE_SCHOOL_MATH/NATIONAL/ANCILLARY...
NAME _____________________________________________ DATE __________________ PERIOD _________
Test, Form 3B
SCORE _________
1. Which size jar of jelly shown in the table
has the lowest unit price?
Size (oz)
10
16
32
Cost ($)
1.69
3.19
5.79
2. The graph shows the savings of Rachel and Sam. What does the
slope of each line represent?
1.
2.
Monthly Savings
40
Dollars($)
Sam
30
20
Rachel
10
0
1
2
3
4
Month
3
3. Volunteers were −
finished with the walkathon when they
4
1
-kilometer mark. How long was the
reached the 4 −
Copyright © The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use.
2
walkathon?
4. A grocery store sells 6 bottles of water for $4.80 and
18 bottles of water for $22.50. Is the cost of the water
proportional to the number sold? Explain.
3.
4.
Solve each proportion.
x
3
5. −
=−
6
5.
8
4.3
w
6. −−
= −−
6.
5
2
7. −
= −−
7.
8. When diving, a bald eagle can reach a speed of 200 miles per hour.
What is this speed in feet per second? Round to the nearest
hundredth if necessary.
8.
2.5
v
4
7.5
23
Ratios and Proportional Reasoning
P rinter P DF
013_024_CC_A_AMC2_C01_662328.indd Page 24 29/02/12 4:01 AM s-019
/Volumes/102/GO00864_AM_R1/MIDDLE_SCHOOL_MATH/NATIONAL/ANCILLARY...
NAME _____________________________________________ DATE __________________ PERIOD _________
Test, Form 3B
SCORE _________
(continued)
9.
9. Find the rate of change from the table.
Time (hr)
2
4
6
Temperature (8)
30
34
38
10.
10. Does the graph show a proportional relationship? Explain.
Meat Consumption
Meat (lb)
12
10
8
6
4
2
0
1 2 3 4 5 6
Number of People
11.
12. Brian can get an 8-pack of bottled sports drink for $5.28. How much
would Brian have to pay for a 6-pack of bottled sports drink if the
ratios are proportional?
12.
13. Find y when x = 9 if y varies directly as the square of x, and y = 100
when x = 5.
13.
Copyright © The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use.
11. If it takes the Jones family 2 days to travel 1,240 miles, how many
days will it take them to travel 2,480 miles?
14. Shawn and Crystal work at the hardware store. The wages earned for
the weekend are shown in the table and graph. Who gets paid more
per hour? Explain.
Crystal’s Wages
60
Wages($)
Shawn’s Wages
Time (h) Wages ($)
2
20
3
30
4
40
45
30
14.
15
0
2
4
6
8
Time(h)
24
Ratios and Proportional Reasoning
P rinter P DF