Solve the problem.Find the cost to asphalt a circular racetrack if asphalt costs $70 per 100 ft2. Use 3.1.4 for ? and round to the nearest dollar. 
A. $25,277
B. $21,980
C. $43,081
D. $17,804
Answer: A
Mathematics
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Write the improper fraction as a mixed number or a whole number.
A. 195
B. 
C. 28
D. 197
Mathematics
Find the inverse of the one-to-one function.f(x) = 
A. f-1(x) = 
+ 
B. f-1(x) = 
C. f-1(x) = - 
- 
D. f-1(x) = 
+ 
Mathematics
Use properties of logarithms to expand the logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using a calculator.log 
A. 100x B. log x - 2 C. log x + 2 D. -20x
Mathematics
Solve the problem.A circle of radius r is inscribed in a square with sides 2r as shown in the figure. Express the shaded area in terms of r and ? as a completely factored polynomial.
A. 
(4 - r)
B. 
(4 - ?)
C. 
(2-?)2
D. 
(2 + ?)(2 - ?)
Mathematics