Use the Change-of-Base Formula and a calculator to evaluate the logarithm. Round your answer to three decimal places. log30.362
A. -0.441
B. 8.287
C. -0.925
D. -1.081
Answer: C
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Find the absolute value.
A. 0 B. -21 C. ± 21 D. 21
Write the indicated function.Sue wants to put a rectangular garden on her property using 84 meters of fencing. There is a river that runs through her property so she decides to increase the size of the garden by using the river as one side of the rectangle. (Fencing is then needed only on the other three sides.) Let x represent the length of the side of the rectangle along the river. Express the garden's area as a function of x.
A. A(x) = 43x - 2x2
B. A(x) = 42x - 
x2
C. A(x) = 41x - 
x2
D. A(x) = 42x2 - x
Find T, N, and B for the given space curve.r(t) = (cosh t)i + (sinh t)j + tk
A. T = - 
(tanh t sech t)i + 
j + 
(sech t)k; N = (-sech t)i - (tanh t)k; 
B. T = 
(tanh t sech t)i + 
j + 
(sech t)k; N = (sech2 t)i - (sinh t)k; 
C. T = - 
(tanh t)i + 
j + 
(sech t)k; N = (-sech t)i - (sinh t)k ; 
D. T = 
(tanh t)i + 
j + 
(sech t)k; N = (sech t)i - (tanh t)k; 
Solve the system of equations by substitution. x + 2y = 23x - 7y = -7
A. (1, 1) B. (0, 0) C. (1, 0) D. (0, 1)