Solve.The function N(t) = 
, t ? 8gives the body concentration N(t), in parts per million, of a certain dosage of medication after time t, in hours.Graph the function on the interval [8, ?) and complete the following:N(t) ? 
as t ? ?.
A. 
N(t) ? 0 as t ? ?.
B. 
N(t) ? 1 as t ? ?.
C. 
N(t) ? 0.071 as t ? ?.
D. 
N(t) ? 0.083 as t ? ?.
Answer: D
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Solve the problem.Evaluate 
at t = 
? for the function w(x, y, z) = 
; x = sin t, y = cost, z = t2.
A. - 
B. 
C. - 
D. - 
Use a graphical method to solve the system. Give x- and y-coordinates correct to the nearest hundredth.y = log10(x + 8)y = x2
A. x = -1.38, y = 1.89; x = 1.50, y = 2.25 B. x = -1.38, y = -1.89; x = 1.50, y = -2.25 C. x = -0.92, y = 0.85; x = 0.98, y = 0.95 D. x = -0.92, y = -0.85; x = 0.98, y = -0.95
Solve the problem.Which one of the following equations is set up for direct use of the zero-factor property?
A. (4x + 5)(x - 8) = 0 B. (4x + 5)2 = 8 C. x2 + x = 8 D. 4x2 + 5x - 8 = 0
Use the product rule to multiply. Assume all variables represent positive real numbers.
? 
A. 13
B. 
C. 
D. 