Test Review 2
2. More than half of the students
are excited about the project. In
fact 11/12 of the are excited. If 10
students are not excited about the
project, how many students are
excited?
Answer:
110 Students
4. Use elimination to solve
3x + y = 9
2x – 3y = -15
Answer:
(12/11, 63/11)
7. Graph
a) y = -2
Answer:
Horizontal Line on -2
1. The formula requires 20 liters of
alcohol to make 120 liters of the
solution. How many liters of
alcohol are needed to make 1560
liters of the solution?
Answer:
260 Liters
6. Find m
Answer:
√119
5. Add
Answer:
3a – 3a c – 2c
3
3
2
2
2
3a c
3
7. Graph
b) y = -3x
Answer:
y-int = 0
slope = -3/1
3. Only 20 percent of the
spectators left the contest
discontented. If 6000 spectators
left the contest contented, how
many left discontented?
Answer:
1500 Spectators
10. Find the area of the sector
shown. Dimensions are in inches.
Answer:
80.38 inches
2
8. Find the equation of the line
that has a slope of -3/5 and passes
through (-2, 4).
Answer:
y = -3/5x + 14/5
9. Solve for a, x, and y.
Answer:
a = 25
x=4
y = -7
11. Expand
Answer:
2
3
-m + 2m
3
n
n
12. Solve for the unknown
variables
Answer:
TM = 11/3
TB = 20/3
16. Solve
2 ½ x – 2/5 = -1/10
Answer:
3/25
18. Simplify by adding like terms
Answer:
3
- a + 5a
3
p
2
13. Multiply
Answer:
3
2
12x – 29x – x + 10
20. Simplify
Answer:
-9
14. Divide and check
Answer:
2
x + 6x + 24 + 97/x – 4
15. Solve
-2[(-3)(-2 – x) + 2(x – 3)] = -2x
Answer:
0
17. Simplify
Answer:
4
-243ac
19. Evaluate
Answer:
-67/216