Solve the problem.If f(x) = ex, find f
.
A. -2
B. ln e
C. e1/x
D. 
Answer: D
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Solve.A window is in the shape of a square topped by a semicircle. The side of the square is x cm and the window cannot be wider than 160 cm. Find the function for the area of the window and the domain of the function.
A. A = x2 + 
?x2 : 0 < x ? 160
B. A = x2 + 
?
2 : 0 < x ? 1602 + 
?
2
C. A = 4x2 + 
?x2 : 0 < x ? 160
D. A = x2 + 
?
2 : 0 < x ? 160
Solve the problem.Open parallel transmission lines have a characteristic impedance given by 
Write the expression on the right side as the logarithm of a single quantity.
A. log 10 (a/b) B. 252 log 10 (a/b) C. log 10 (a - b)252 D. log 10 (a/b)252
Identify the expression as a monomial, a binomial, a trinomial, or not a polynomial.-12a10
A. monomial B. binomial C. not a polynomial D. trinomial
Decide if the statement is true or false.-(-7) > -21
A. False B. True