Chapter 9 - XYZ Custom Plus

Chapter 9 Cumulative Review
573
28. Identify the property or properties used in the following:
(6 1 8) 1 2 5 6 1 (8 1 2).
29. Surface Area Find the surface area of a rectangular
solid with length 7 inches, width 3 inches, and height 2
inches.
30. Age Ben is 8 years older than Ryan. In 6 years the sum
of their ages will be 38. How old are they now?
31. Gas Mileage A truck travels 432 miles on 27 gallons of
gas. What is the rate of gas mileage in miles per gallon.
32. Discount A surfboard that usually sells for $400 is
marked down to $320. What is the discount? What is
the discount rate?
33. Geometry Find the length of the hypotenuse of a right
triangle with sides of 5 and 12 meters.
34. Cost of Coffee If coffee costs $6.40 per pound, how
much will 2 lb 4 oz, cost?
35. Interest If $1,400 is invested at 6% simple interest for 90
days, how much interest is earned?
36. Wildflower Seeds C.J. works in a nursery, and one of
his tasks is filling packets of wildflower seeds. If each
packet is to contain }1 4 } pound of seeds, how many packets
can be filled from 16 pounds of seeds?
37. Checking Account Balance Rosa has a balance of $469 in
her checking account when she writes a check for $376
for her car payment. Then she writes another check for
$138 for textbooks. Write a subtraction problem that
gives the new balance in her checking account. What is
the new balance?
38. Commission A car stereo salesperson receives a commission
of 8% on all units he sells. If his total sales for
March are $9,800, how much money in commission
will he make?
39. Volume How many 8 fluid ounce glasses of water will it
take to fill a 15-gallon aquarium?
40. Internet Access Speed The table below gives the speed of the most common modems used for Internet access. The abbreviation
bps stands for bits per second. Use the template to construct a bar chart of the information in the table.
Modem Speeds
Modem Type Speed (bps)
28K 28,000
56K 56,000
ISDN 128,000
Cable 512,000
DSL 786,000
Speed (bps)
900,000
800,000
700,000
600,000
500,000
400,000
300,000
200,000
100,000
0
28K 56K ISDN
Modem type
Cable
DSL