Answer Key to Q2 Quarter Exam Review 1:
1) -32
2) 2
3) 13 4) 3
5) 4.5
6) -20
7) x < 3
8) x > 3
9) x < -1
10) -4 < x < 1 11) x > 4 or x < -2
12) {-3,13/3} 13) {-5,6}
17) x > -8 and x < 4
14) {-6,2}
15) {-1, 4}
18) x < 1 or x > 7
16) x > -2 and x < 3
19) x < -7 or x > 3
20) (-5,3)
21) (-8,11)
22) ( ½ , 0)
23) j 24)b
29) h 30) f
25)a 26) i 27)d 28) why was there no 28?
31) e 32) g 33) c
Q2 Quarter Exam Review 2:
1) Two buses leave the station at the same time. One is traveling south at a speed of 68
mph. The other is traveling south at 54 mph. How long until they are 81.2 miles apart?
2) Two planes leave the airport at the same time. One is traveling north at a speed of 184
mph. The other is traveling south at 223 mph. How long until they are 1,465.2 miles
apart?
3) There are 140 coins in a jar. Some of them are quarters and some of them are dimes.
If there is $30.80 in the jar, how many of each coin are there?
4) 5x – 7y = 137
5) x = 5 – 2y
3x + 11y = -85
6x – 5y = 81
6) 6x + 5y = -8
11x + 4y = 37
7) y = 4x - 27
8x – 5y = 75
8) -3|2x - 14| + 1 < 7
9) 5| 7x – 14 | - 8 > 72
13
-4
1) Which number is a rational number but not an integer?
a) – 6
b) 0
c) ⅝
d) none
2) Which number is an integer but not a natural number?
a) π
b) -¾
c) 0
d) none
3) Which number is an integer, but not rational?
a) π
b) 4
c) -.25
d) none
4) Which number is whole, but not natural?
a) 0
b) 4
c) .75
d) none
5) Which number is natural, but not whole?
a) ¼
b) 4
c) 0
d) none
6) Give an example of a number that is rational, but not an integer.
7) Give an example of a number that is an integer, but not a whole number.
8) Give an example of a number that is a whole number, but not a natural number.
9) Give an example of a number that is a whole number, but not an integer.
10) Give an example of a number that is rational, but not a whole number.