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Pre-Algebra Final Exam Review
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Terms in this set (12)
Simplify the following expression:
7x + 14 - 2x + 3
5x + 17
Simplify the following expression:
8(x + 3) - (-4) + x
8x + 24 + 4 + x which simplifies further to 9x +28
Solve for the variable: 5.2x = 17.94
x = 3.45
Solve for the variable: 37 - x = 8.3
x = 28.7
Solve for the variable: x/5.1 = 9
x = 45.9
Solve for the variable:
-2x + 12 = 15.1
x = -1.55
Skotifi charges $0.75 per song download plus a membership fee of $5.70. Diego can spend at most $15. Write, solve, and graph an inequality showing m, the amount of songs Diego could download with the amount of money he has.
0.75m + 5.70 ≤ 15
m = 12.4 songs (or just 12 songs)
Show me the graph
Find the unit rate (miles per hour) of a train traveling 352 miles in 2.5 hrs.
140.8 mph
Your math class has 15 girls and 10 boys. 3 girls and 2 boys join the class. Your friend says the ratio of girls to boys is the same as before. Is he right? Why or why not?
Yes. 15/10 is equivalent to 18/12
Write as 0.035 as a percent.
3.5%
24 is what percent of 70?
34.2%
Bieber concert tickets are $65.95. You got a 15% discount with a LivingSocial coupon and then paid 8.25% sales tax. What was the final cost of the tickets?
$60.68 after discount and tax
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