can't do math for the life of me. HELP.

massgirl92
Tue, 22 Jun 2010 15:47:41 +0000

i have a couple questions on ACT math and there are no answer explanations so if you could help i would really appreciate it. thanks!

If x is less than or equal to 2, then |x-2|= ?
a. 0
b. x + 2
c. x-2
d. -x-2
e. -x + 2

There are 25 buildings on Elm Street. Of these 25 buildings, 10 have fewer than 6 rooms, 10 have more than 7 rooms, and 4 have more than 8 rooms. What is the total number of buildings on Elm Street that have 6, 7, or 8 rooms?
a. 5
b. 9
c. 11
d. 14
e. 15

A plane contains 11 horizontal lines and 11 vertical lines. These lines divide the plane into disjoint regions. How many of these disjoint regions have a finite, nonzero area?
a. 100
b. 110
c. 144
d. 156
e. 169