You're answer is the third one, you gotta divide the money by the hours worked and then compare.
He bought 36 baseball cards. Since 3/4 of the 48 cards are baseball cards, you need to find 75% of 48, which is 75*48, which is 36 cards. Hope this helps.
<span>21-3y=36-6y +3y
21 = 36 - 3y -36
-36+21 = -3y
- 15 = - 3y ÷ -3
5 = y
Choice: B
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Answer:
Population: 38.64. Sample: 43.20