Algebra Ch. 3 Review

Equations

100

Solve n/3 - 4 = 2

n = 18

200

Solve 8a - 3(2a + 5) = 13

a = 14

300

-3x - 1 = 8 - 3x

no solution

400

1/12 (48 + 24y) = 2(17 - 4y)

y = 3

500

A rectangle has an area of 195.5 square inches and a length of 17 inches. What is the width of the rectangle?

11.5 inches

Functions

100

Write an equation and solve (you must have the equation and solution to receive points):

The output of a function is 10 more than 3 times the input. What is the input when the output is 1?

y = 3x + 10

1 = 3x + 10

x = -3

200

DAILY DOUBLE

Write this equation in function form:

3x = 2y - 18

y = 3/2x + 9

300

Write the equation in function form:

4y - x = 20 - y

y = 1/5x + 4

400

Solve the formula for h:

V = lwh

h = V/lw

Proportions

100

56/16 = x/2

x = 7

200

9/4 = 3x/20

x = 15

300

(n + 8) / (5n -2) = 3/8

n = 10

400

You know that 5 pizzas will feed 20 people. How many pizzas do you need to feed 88 people?

22 pizzas

Percents

100

What number is 30% of 55?

16.5

200

117 is 78% of what number?

150

300

DAILY DOUBLE

What percent of 56 is 21?

37.5%

400

There were 7500 tickets sold for a concert, 20% of which were general admission tickets. How many general admission tickets were sold?

1500 tickets