单项选择题


(A) 5
(B) 10
(C) 15
(D) 25
(E) It cannot be determined from the information given.
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单项选择题
Which of the following is equal to of 0.1 percent
(A) 0.000025
(B) 0.00025
(C) 0.0025
(D) 0.025
(E) 0.25
单项选择题
For senior class pictures, a photographer charges x dollars to make a negative, dollars for each of the first 20 prints, and dollars for each print in excess of 20 prints. If $80 is the total charge to make a negative and 30 prints, what is the value of x
(A) 3
(B) 4
(C) 5
(D) 6
(E) 7
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