Solve the equation by changing it to exponential form.log x = 2
A. x = 20
B. x = -20
C. x = 210
D. x = 102
Answer: D
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Solve the problem.Suppose the consumption of electricity grows at 5.1% per year, compounded continuously. Find the number of years before the use of electricity has tripled. Round the answer to the nearest hundredth.
A. 0.22 yr B. 58.82 yr C. 21.54 yr D. 2.15 yr
Convert the numeral to Hindu-Arabic form.
A. 2662 B. 2502 C. 2742 D. 1066
Solve the problem.A pair of ropes needs adjustment. One rope is 57 inches and the other is 41
inches. Find how much the longer rope should be shortened to make both ropes the same length.
A. 7
in.
B. 98
in.
C. 16
in.
D. 15
in.
Rewrite the expression as the sum and/or difference of logarithms, without using exponents. Simplify if possible.logn
A. 
logn6 + 
lognx - 
lognz
B. 
logn6 + 5 lognx - 9 lognz
C. 
logn6 + 
lognx + 
lognz
D. 
logn6 - 
lognx - 
lognz