155. 16103-!-item-!-187;#058&010667
If 2^x - 2^(x - 2) = 3(2^13), what is the value of x ?
(A) 9
(B) 11
(C) 13
(D) 15
(E) 17
ANS:D
178. 18885-!-item-!-187;#058&011972
Adam and Beth each drove from Smallville to Crown City by different routes. Adam drove an an average speed of 40 miles per hour and completed the trip in 30 minutes. Beth's route was 5 miles longer, and it took her 20 minutes more than Adam to complete the trip. How many miles per hour was Beth's average speed on this trip?
(A) 24
(B) 30
(C) 48
(D) 54
(E) 75
ANS:B
180. 19628-!-item-!-187;#058&012404
List K consists of 12 consecutive integers. If -4 is the least integer in list K, what is the range of the positive integers in list K ?
(A) 5
(B) 6
(C) 7
(D) 11
(E) 12
ANS:B
有些答案我覺得很奇怪,請大家幫幫忙喔