Download Test, Form 3A

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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 3A
SCORE _________
1. Which size bag of cat food shown
in the table has the lowest unit price?
Size (oz)
24
40
64
Cost ($)
5.49
8.00
15.99
2. The graph shows the savings of Mia and Kyle. What does the slope
of each line represent?
1.
40 oz
the rate of
which money
2. was saved
Monthly Savings
Dollars($)
80
60
Kyle
40
Mia
20
0
1
2
3
Month
3
3. Cyclists were −
finished with their ride when they reached
5
the 15-kilometer mark. How long was their ride?
3.
25 km
6 bottles
1.5 bottles
−−−−−
$4
$1
18 bottles
1.8 bottles
and −−−−− = −−−−− ;
$10
$1
Copyright © The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use.
No; −−−− =
4. A grocery store sells 6 bottles of water for $4 and
18 bottles of water for $10. Is the cost of the water
proportional to the number sold? Explain.
these rates are not equivalent.
4.
Solve each proportion.
k
0.6
5. −−
= −−
5.
15.6
18.2
4
= −−
6. −−−
16
6.
72.8
6.5
3
7. −−
= −−−
7.
25.35
8. When diving, a hummingbird can reach a speed of 40 miles
per hour. What is this speed in feet per second? Round to the
nearest hundredth if necessary.
8. 58.67 ft/s
13
j
v
0.5
11.7
21
Course 2 • Chapter 1 Ratios and Proportional Reasoning
P rinter P DF
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3/6/12
7:47 AM s-019
/Volumes/102/GO00864_AM_R1/MIDDLE_SCHOOL_MATH/NATIONAL/ANCILLARY..
/Volumes/102/GO00864_AM_R1/MIDDLE_SCHOOL_MATH/NATIONAL/ANCILLARY...
NAME _____________________________________________ DATE __________________ PERIOD _________
Test, Form 3A
SCORE _________
(continued)
1
2−
o per hour
9. 2
9. Find the rate of change from the table.
Time (hr)
2
4
6
Temperature (°)
75
80
85
Yes, the graph
shows a
straight line
that passes
through the
origin.
10.
10. Does the graph show a proportional relationship? Explain.
Cost ($)
Candy
9
8
7
6
5
4
3
2
1
0
1
2
3
4
Candy (lb)
11.
7 days
12. Janelle can get a 24-pack of bottled water for $6.80. How much
would Janelle have to pay for a 12-pack of bottled water if the
ratios are proportional?
12.
$3.40
13. Find y when x = 9 if y varies directly as the square of x, and
y = 245 when x = 7.
13.
405
14. Jaime and Ryan work at the grocery store. The wages earned for the
weekend are shown in the table and graph. Who gets paid more per
hour? Explain.
Jaime; since
the slope of
the line is 7
and the table
shows a rate
of $8 per hour,
Jaime makes
14. more.
Ryan’s Wages
20
Wages($)
Jaime’s Wages
Time (h)
Wages ($)
3
24
4
32
5
40
15
10
5
0
1
2
3
Time(h)
22
Course 2 • Chapter 1 Ratios and Proportional Reasoning
P rinter P DF
Copyright © The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use.
11. If it takes the Ramirez family 3 days to travel 1,560 miles, how
many days will it take them to travel 3,640 miles?