Use mathematical symbols to translate the phrase. Use x to represent the unknown number. If there are two unknown numbers, use x and y to represent the numbers.37 percent of some number
A. 
B. 0.37x
C. 
D. 37x
Answer: B
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Simplify.(2xy)-5
A. 32x5y5
B. 
C. 
D. 
Use the change-of-base formula to find the logarithm. Round your answer to four decimal places. log1/25
A. 1.0000 B. -0.4307 C. 0.3979 D. -2.3219
Work the problem. Give the answer in scientific notation, rounded to two decimal places, unless otherwise indicated.The national debt of a small country is $31,920,000,000 and the population is 3,990,000. What is the amount of debt per person? Give the answer without exponents.
A. $80,000 B. $8000 C. $800 D. $127,360,800
Graph the polar equation.r = 
Identify the directrix and vertices. 
A. directrix: 
unit(s) to the left of
the pole at x = - 
vertices: 
, 
B. directrix: 
unit(s) below
the pole at y = - 
vertices: 
, 
C. directrix: 
unit(s) to the right of
the pole at x = 
vertices: 
, 
D. directrix: 
unit(s) above
the pole at y = 
vertices: 
, 
