8Y Test 2 Review

2 step equations

100

9x + (-3) = 24

x = 3

200

1.3x - 2.5 = 1.4

3

300

w/12 - 11 = -3

w = 96

400

r / 3.4 + 10.4 = 15.4

r = 17

500

2z/3 - 7 = -9(-3+1)

37.5

combining like terms

100

16x - 15 - 9x = 13

x = 4

200

-29 = 1 - 6n - 9n

n = 2

300

-3/4(n-3) = 12

n = -13

400

6.4 + 2.1(x-2) = 8.5

x=3

500

The perimeter of a rectangle is 24 feet. The width is x+3 and the length is 2x. What is the measure of each side length? What is the area?

Width= 3 ft, length= 3 ft, area= 36ft²

variables on both sides

100

12x - 8 = 11x + 9

x = 17

200

-3x - 12 = -9x - 1

x = 1 5/6

300

4.5x + 3.4 = 1.5x - 2.6

x = -2

400

14 - 4z = 2(17-z)

z = -10

500

1/4x + 4/5 = 1/5x - 5/4

x = -41

proportions

100

n/11 = 40 / 55

n = 8

200

2w/16 = 30/80

w = 3

300

(p+15)/42 = (p-5)/14

p = 15

400

2y/(y+7) = 24/54

y = 2

500

At the Long Beach Aquarium, the ratio of freshwater fish to saltwater fish is 3 to 5. There are a total of 640 fish. How many more saltwater fish are there than freshwater fish?

160 more saltwater fish

teacher trivia

100

Which teacher rowed crew at the University of Washington?

Ms. Stodden

200

Which teacher's birthday is on Valentines Day?

Ms. Harris

300

Which teacher was born in Oakland?

Ms. V

400

Which teacher was asked to be an extra in the movie Dirty Dancing?

Mr. Miller

500

Which teacher played in a band called The Tigers?

Ms. Neale