Question

This is 4 questions.

1. Last year there where 1, 435 8th Grade students enrolled at your school. This year there are 1,220. What is the percent change in the number of 8th Grade students?
A: 15% Decrease
B: 215% Decrease
C: 17.6% Decrease
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2. Mia is finally able to upgrade her cell phone. The one she wants cost $220 but she is able to get it 60% off, She has a coupon for an additional 10% off. How much does she pay for her phone?
A: $79.20
B: $66
C: $96.80
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3.Last week Kellie ran 28 miles. This week she ran 32 miles. What is the percent change in the number of miles she ran?
A: 12.5% INCREASE
B: 14.3% INCREASE
C: 14.3% DECREASE
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4. A stereo system costs $275. It was on sale for 15% off. The sales person receives a 2% commission. How much of a commission do they receive?
A: $4.68
B: $233.75
C: 46.75

Answer 1

A C A B. I THINK IM NOT FOR SURE

Answer 2

1) a. 15% decrease
2) a. $79.20
3) b. 14.3% increase
4) a. $4.68

#1 explanation:
1435 - 1220 = 215
215/1435 = 0.1498
0.1498 x 100 = 14.98 = 15%

#2 explanation:
220 x 0.6 = 132
220-132=88
88 x 0.1 = 8.8
88-8.8 = 79.2 $

#3 explanation:
32-28=4
4/28=0.1428
0.1428 x 100 = 14.28 = 14.3%

#4 explanation:
275 x 0.15 = 41.25
275-41.25 = 233.75
233.75 x 0.02 = 4.675 = 4.68 $