Algebra Demystified 2nd Ed

Final exaM 463

DeMYSTiFieD / algebra DeMYSTiFieD / gibilisco / 000-0 / appendix

94. 1
    8

1

12

1

xx^2320

++=

A.^61015

120

2

3

xx

x

++ B. 61015

120

3

3

xx

x

++ C. 18 512

150

3

3

xx

x

++

D. 18 10 12

150

3

3

xx

x

++

95. Working together, Anna and Jean can paint a room in 2 hours, 24 min-
    utes. Working alone, Anna would need 2 hours more than Jean would
    need to paint the room by herself. How long would Anna need to paint
    the room by herself?
    A. 4 hours B. 5 hours C. 6 hours D. 7 hours


96. 8
    4 x^2

=

A.^4

x

B. 2

x

C. (^) − 2 x D. (^) − 4 x

97. A piggybank contains $3.95 in change. There are 2 more quarters than
    dimes, and 3 more dimes than nickels. How many nickels are there?
    A. 4 B. 6 C. 8 D. 10


98. If x
    x xx

x

− x

+

−−

=

5 +

6

(^2451)
, then
A. x=−^65 B. x=− 1 C. x=−^75 D. There is no solution.

99. The sum of two consecutive integers is 31. What is their product?

A. 224 B. 210 C. 240 D. The product cannot be determined.

100. A runner and bicyclist pass each other at an intersection. The runner is
     headed north at the rate of 9 mph. The cyclist is headed west at the rate
     of 12 mph. How long after they pass each other will they be 412 miles
     apart?
     A. 16 minutes B. 18 minutes C. 20 minutes D. 22 minutes