Which equation represents the situation: John's pool currently has 12 inches of water in it. He can pump eight inches of water into the pool every hour. In how many hours will the pool have sixty inches of water in it?
60h - 12 = 8
12h + 8 = 60
8h + 60 = 12
8h + 12 = 60
3. Multiple Choice
3 minutes
1 pt
Solve: -20 > -3d + 7
d > 9
d > -9
d < 9
d < -9
4. Multiple Choice
3 minutes
1 pt
Factor: 7xy + 56y+42xyz
7x
8(x + 7)
7y(x + 8+6xz)
x(7y + 8z+6xz)
5. Multiple Choice
3 minutes
1 pt
A spinner numbered 1 through 15 is spun once. What is the probability of getting an even number? (A prime number is only divisible by one and itself, for example, 17 is prime.)
6/15
7/15
8/15
0/15
6. Multiple Choice
3 minutes
1 pt
Add: (-2x + 6) + (-13x - 16)
15x + 22
11x + 22
-11x - 10
-15x - 10
7. Multiple Choice
3 minutes
1 pt
Solve: 18 - 4z = -58
19
-19
10
-10
8. Multiple Choice
5 minutes
1 pt
Find the area and circumference of a circle that has a radius of 12.
A=452.4, C=37.7
A=452.4, C=75.4
A=75.4, C=37.7
A=113.1, C=75.4
9. Multiple Choice
5 minutes
1 pt
A jar contains 5 blue marbles, 8 red marbles, 4 white marbles, and 3 purple marbles. Suppose you pick a marble at random without looking. What is the probability of choosing a marble that is not white?
1/5
3/5
4/5
3/4
10. Multiple Choice
5 minutes
1 pt
Solve: -5x - 7 ≥ 43
x ≤ 10
x ≥ 10
x ≤ -10
x ≥ -10
11. Multiple Choice
30 seconds
1 pt
A rectangular garden has a width of 13ft. If the perimeter of the garden is 112ft, what is the length?
8.6ft
45ft
43ft
49.5ft
12. Multiple Choice
30 seconds
1 pt
Two angles are supplementary. One angle measures 114 degrees. What is the measure of the other angle?
24 degrees
66 degrees
150 degrees
180 degrees
13. Multiple Choice
30 seconds
1 pt
A trapezoid has a height of 7 units, a base of 5 units, and a base of 12 units. What is the trapezoid's area?
59.5 square units
120 square units
144 square units
420 square units
14. Multiple Choice
30 seconds
1 pt
A map scale is given as 3cm=5miles. What is the actual distance represented by 8cm on the map?
13 1/3 miles
21 miles
24 miles
120 miles
15. Multiple Choice
30 seconds
1 pt
$450 represents what percent of $1100? Round your answer to the nearest whole.