3.9: Chapter 3 Review
Difficulty Level: At Grade
Created by: CK12
Solve for the variable.

a+11.2=7.3 
9.045+j=27 
11=b+57 
−22=−3+k 
−9=n−6 
−6+l=−27 
s2=−18 
29=e27 
u÷−66=11 
−5f=−110 
76=−19p 
−h=−9 
q+111=−2 
−2−2m=−22 
−5+d6=−7 
32=2b−3b+5b 
9=4h+14h 
u−3u−2u=144 
2i+5−7i=15 
−10=t+15−4t 
12k−16+212k=0 
−1543120=35x+114(−115x+85) 
−5.44x+5.11(7.3x+2)=−37.3997+6.8x 
−5(5r+7)=25+5r 
−7p+37=2(−6p+1) 
3(−5y−4)=−6y−39 
5(a−7)+2(a−3(a−5))=0
Write the following comparisons as ratios. Simplify when appropriate.
 10 boys to 25 students
 96 apples to 42 pears
 $600 to $900
 45 miles to 3 hours
Write the following as a unit rate.
 $4.99 for 16 ounces of turkey burger
 40 computers to 460 students
 18 teachers to 98 students
 48 minutes to 15 appointments
Solve the proportion.
 Solve for
n: −6n−7=−2n+1 .  Solve for
x: −95=x−7x+10 .  Solve for
b: 5b12=311 .  Solve for
n: −12n=52n+6 .
Write the decimal as a percent.
 0.4567
 2.01
 0.005
 0.043
Write each percent as a decimal.
 23.5%
 0.08%
 0.025%
 125.4%
Write each percent as a fraction.
 78%
 11.2%
 10.5%

33.3¯%
Solve using the Percent Equation.
 32.4 is 45% of what number?
 58.7 is what percent of 1,000?
 What is 12% of 78?
 The original price is $44 and the markup is 20%. What is the new price?
 An item originally priced $240 has a 15% discount. What is the new price?
 A pair of shoes originally priced $89.99 is discounted to $74.99. What is the percent of markdown?
 A salon’s haircut rose in price from $10 to $14. What is the percent of markup?
 An item costing
c dollars decreased $48, resulting in a 30% markdown. What was the original price?  The width of a rectangle is 15 units less than its length. The perimeter of the rectangle is 98 units. What is the rectangle’s length?
 George took a cab from home to a job interview. The cab fare was $4.00 plus $0.25 per mile. His total fare was $16.75. How many miles did he travel?
 The sum of twice a number and 38 is 124. What is the number?
 The perimeter of a square parking lot is 260 yards. What are the dimensions of the parking lot?
 A restaurant charges $3.79 for
18 of a pie. At this rate, how much does the restaurant charge for the entire pie?  A 60watt light bulb consumes 0.06 kilowatts/hour of energy. How long was the bulb left on if it consumed 5.56 kilowatts/hour of energy?
 A
612 foottall car casts a 33.2foot shadow. Next to the car is an elephant casting a 51.5foot shadow. How tall is the elephant?  Two cities are 87 miles apart. How far would they be on a map with a scale of 5 inches : 32 miles?
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Feb 22, 2012Last Modified:
Dec 11, 2014
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