A bunch of QR questions that need explanations...please help!

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YourDentition

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Hi, I had a few questions that I wanted to share with the rest of you. These may be good questions for some, other may have a good answer for them. Either way, please help if you can by giving us your best explanation or solution to these problems.
I want to thank you in advance for all your help. And good luck in everything you do.

QR Questions:

1: The five tires that come with Steve’s new car were rotated frequently so that each time was used exactly the same amount of time as the others. The tires were replaced when odometer red 24,000 miles. For how many miles had each been used?
A. 30, 000miles
B. 24,000
c. 18,000
d.20,000
e. 19,200
Answer listed as: E


2. You are offered a job with salary at $30,000 the first year. Each succeeding year, you are guaranteed a 5% cost of living increase and up to $20,000 possible merit increase. What is the maximum amount you could earn during the third year at the job?
A. 37K
B. 37,175
C. 37,400
D. 39,600
E. 40,500
Answer: B

3. Which line is parallel to the y axis?
a. x=4y
b. x = (2/y°)b
c. x=y+6
d. xy= 2
e. xy = 2 +4(y^-1)
Answer: B
 
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