Chapter 3 Review

Multi-Step Equations

100

x/3 - x/9 = 6

27

200

x/2 + 1/3 = 15/6

13/3

300

(2x-8)/10 = 6

26

400

Solving Equations.

254 = -2v - 6(2 +6v)

What is:

v = -7

500

Solving Equations

-93 = 7(-3k - 8) + 5

What is:

k = 2

Proportions

100

3/z = 1/8

24

200

b/4 = 3/2

6

300

If it takes Davis 30 minutes to drive down Hickory lane at 40 miles per hour, how long does it take him going 120?

10 minutes

400

If there are 1,200 calories in 8 oz of hot fudge, how many calories are in 3 oz of hot fudge?

450 Calories

500

If a car can drive 25 miles for every gallon of gas, and the car traveled 70 miles, how many gallons of gas did the car use?

2.8 gallons

% Word Problems

100

The $10 book was discounted by 30%. James calculated the cost of the book

$7.00

200

Jeremy wanted to buy a $25 basketball with a 8% sales tax but needed to know how much money he had to have in his wallet.

$27.00

300

The $20 concert ticket was increased to $36 on the day of the concert for a percent increase of _______?

80%

400

Bill's family decided to buy the $220 trampoline with a 9.5% sales tax. His tax is _____?

$20.90

500

The number of hairs on David's grandfather's head decreased from 110,000 to 80,000 when he went bald. The number of hairs on his head decreased by what percent?

27.3%

Literal Equations

100

Solve for m.

m - 4n = 8

What is:

m=4n+8

200

Solve for x.

2x + 10y = -8

What is:

x = -5y - 4

300

Solve for y.

7x - 5y = -25

What is:

y = (7/5)x + 5

400

Solve for x.

u = xk + y

What is:

x = (u - y)/k

500

Solve for z.

3z + w = p

What is:

z = (p - w)/3

Multi-Step Equations w/ Variables on Both Sides

100

Solving Equations

6(6n - 2) = 8n - 40

What is:

n = -1

200

Solving Equations

-4(-8p + 1) = -4 - 8p

What is:

p = 0

300

Solving Equations

6a - 7(2a + 4) = -33 - 8a

What is:

No solution

400

Solving Equations

-5(8n - 4) - n = - 16 - 5n

What is:

n = 1

500

Solving Equations

-15 - 5x = 5(-x - 3)

What is:

Infinite solutions