Solve the problem.The time T necessary to make an enlargement of a photo negative varies directly as the area A of the enlargement. If 100 seconds are required to make a 5-by-4 enlargement, find the time required for a 
enlargement.
A. 144 sec
B. 216 sec
C. 252 sec
D. 180 sec
Answer: D
Mathematics
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An investor has watched the value of his portfolio double in the last 12 months. If the current value of his portfolio is $260,000, what was its value one year ago?
A. $65,000 B. $130,000 C. $130,001 D. $10,833 E. $520,000
Mathematics
Give the meaning of the metric prefix.hecto
A. 
B. 1000
C. 100
D. 10
Mathematics
Add or subtract. Express the answer as a mixed number.38
- 25
A. 13
B. 12
C. 12
D. 11
Mathematics
Solve the problem.Write one out of five crimes as a decimal and as a percent.
A. 0.2, 2% B. 2, 200% C. 0.2, 200% D. 0.2, 20%
Mathematics