If the speed were increased by 10 mph, a 20-mile trip would take 1 hours less time. How long will the trip take at the slower speed?
?
A. 2 hours
B. 20 hours
C. 10 hours
D. 1 hours
E. 21 hours
Answer: A
Mathematics
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Determine the natural logarithm of the number. Round to the nearest ten-thousandth.0.994
A. -0.0060 B. 0.0026 C. 0.0060 D. -0.0026
Mathematics
Write the expression as the logarithm of a single number or expression with a coefficient of 1. Assume all variables represent positive numbers.ln (2x + 2) + ln (x + 6)
A. ln (2x2 + 8x + 12)
B. ln 
C. ln (3x + 8)
D. ln (2x2 + 14x + 12)
Mathematics
Express the phrase as a ratio in lowest terms.2 yards to 3 feet
A. 
B. 
C. 
D. 2
Mathematics
Solve the problem.37% of those who purchase music CDs online are 18-23 years old.This is three and one-half times the number who are 38-43 years old. What percent of online music purchasers are 38-43 years old?
A. 10.6% B. 37% C. 111% D. 129.5%
Mathematics