13. 14.
15. 16.
17. 18.
2.4 Solve each problem.
19.If 7 is added to five times a number, the result is equal to three times the number. Find
the number.
20.In 2009, Illinois had 118 members in its House of Representatives, consisting of only
Democrats and Republicans. There were 22 more Democrats than Republicans. How
many representatives from each party were there? (Source:www.ilga.gov)
21.The land area of Hawaii is 5213 greater than the area of Rhode Island. Together, the
areas total 7637. What is the area of each of the two states?
22.The height of Seven Falls in Colorado is the height of Twin Falls in Idaho. The sum of
the heights is 420 ft. Find the height of each. (Source: World Almanac and Book of Facts.)
23.The supplement of an angle measures 10 times the measure of its complement. What is
the measure of the angle?
24.Find two consecutive odd integers such that when the lesser is added to twice the greater,
the result is 24 more than the greater integer.
2.5 A formula is given along with the values for all but one of the variables. Find the
value of the variable that is not given. Use 3.14as an approximation for.
- ;, 26. ;, ,
27. ; 28. ;
Solve each formula for the specified variable.
- for h 30. for h
Find the measure of each marked angle.
Solve each problem.
33.The perimeter of a certain rectangle is 16 times the width. The
length is 12 cm more than the width. Find the width of the
rectangle.
34.The Ziegfield Room in Reno, Nevada, has a circular turntable on which its showgirls
dance. The circumference of the table is 62.5 ft. What is the diameter? What is the radius?
What is the area? Use 1 p=3.14. ( 2 Source: Guinness World Records.)
a=
1
2
a=bh h 1 b+B 2
V= r= 6
4
3
C= 2 pr C=29.83 pr^3
a= h= 8 b= 3 B= 4
1
2
a= a= 44 b= 8 h 1 b+B 2
1
2
bh
p
5
2
mi^2
mi^2
1
2
1 x+ 32 -
2
3
3 x- 1 - 2 x+ 62 = 41 x- 42 +x 1 x- 22 = 3
0.1 1 x+ 802 +0.2x= 14
1
2
r-
r
3
=
r
6
312 x+ 62 - 51 x+ 82 =x- 22 5 x+ 9 - 12 x- 32 = 2 x- 7
168 CHAPTER 2 Linear Equations and Inequalities in One Variable
(8x – 1)° (3x – 6)°
(3x + 10)°
(4x – 20)°
W + 12
W
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