Test PracticeT
226 Equations and InequalitiesALGEBRA Solve each equation. Check your solution. (Lesson 2B)- 4 f = 28 49. - 3 y = - 15 50.
p
_
14
= 3 51. _x
30
= 15
- 40.5 = - 4.5a 53. - 58 = 7.25c 54. 6.8 = _b
- 7
55. 2.25 = _^9
m
- BAKING Carlota made one batch of brownies.
She used the recipe shown. If 8 eggs remain
after making the brownies, how many eggs did
Carlota have originally? Write and solve an
equation. (Lesson 1D) - NUMBER THEORY Molly is thinking of a number.
Suppose you divide the number by 5 and then
add -2. After subtracting 10, the result is -25.
What is Molly’s number? Use the work backward
strategy. (Lesson 1A) - Audrey drove 200 miles in 3.5 hours.
Which equation can you use to find the
rate r at which Audrey was traveling?
A. 200 = 3.5r
B. 200 · 3.5 = r
C. _3.5r = 200
D. 200 r = 3.5 - A high-speed train travels 100 miles in
_^23 hour. Which speed represents the rate
of the train?
F. 50 mph
G. 75 mph
H. 100 mph
I. 150 mph - The table shows the results of a survey.
Music Preference
Type Fraction of Students
Pop^ _^58
Jazz^ _^18
Rap^ _^14If there are 420 students surveyed,
which equation can be used to find the
number of students s who prefer rap?
A. _^1
4
s = 420 C. s + _^1
4
= 420B. s = _^1
4
· 420 D. 420 + s = _^1
4- SHORT RESPONSE Nithia earns
$6.25 per hour at work. She wants to
earn $100 for a class camping trip. Use
the equation below to find h, the number
of hours she will have to work to earn
the money.
6.25h = 1002 cups white sugar
1 cup butter(^) cup cocoa powder
1 teaspoon vanilla extract
4 eggs
1 cups all-purpose flour
(^) teaspoon baking powder
(^) teaspoon salt
21
(^12)
(^12)
21
Brownies (makes 1 batch)
214_226_C04L2_895130.indd 226 12/31/09 3:57 PM