Algebra 1 Chapter 3 Review

1

100

Solve y+8=17

y=9

200

28=-41-y

y=-69

300

8m+12-3m=78

m=18

400

-2/3x(6-2a)=6

a=15/2 or 7 1/2

500

Rewrite the equation -3x+3y-9=-5+2y so that y is a function of x.  Then use the result to find y when x= -2, 0, and 1.

y=3x+4

y=-2, 4, 7

2

100

-9+x=-2

x=7

200

w/8=9/11

w=6 6/11

300

7(-5x+8)=-49

x=3

400

9(-5-r)=-10-2r

r=-5

500

Your earn $210 in 40 hours.  At this rate, how much do you earn in 55 hours?

$288.75

3

100

2/3x=6

x=9

200

y/3+7=0

y=-21

300

-2p-(-5)-2p=13

p=-2

400

13.7t-4.7=9.9+8.1t 

Round to the nearest tenth

t=2.6

500

Convert Ethiopian birrs to U.S. dollars. (1 dollar is 7.821 birrs.) Round to the nearest dollar.

$60

4

100

9s=108

s=12

200

12-t=-19

t=31

300

y/4+2=0

y=-8

400

S=2xyz

Solve for z.

z=S/2xy

500

A cab driver typically receives about 15% of the fare charged as a tip.  To earn a total of $30 in tips, about how much would a driver need to collect in fares?

$200

5

100

14=a/11

a=154

200

z-(-13)=21

z=8

300

-2(4-x)-7=5

x=10

400

S=R+1/2tn

Solve for n

n=2(S-R)/t

500

How many feet are in 8.3 kilometers? (1 km = 3281 ft)

27,232.3