Solve the problem.The polynomial C(x) = -0.006x4 + 0.140x3 - 0.53x2 + 1.79x measures the concentration of a dye in the bloodstream x seconds after it is injected. Find the rate of change of concentration with respect to time.
A. 
= -0.018x3 + 0.280x2 - 0.53x + 1.79
B. 
= -0.006x3 + 0.140x2 - 0.53x + 1.79
C. 
= -0.024x3 + 0.420x2 - 1.06x + 1.79
D. 
= -0.024x4 + 0.420x3 - 1.06x2 + 1.79x
Answer: C
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Evaluate the integral.
A. 
?
B. 
?
C. 
?2
D. 
?2
Graph the function. Describe its position relative to the graph of the indicated basic function.f(x) = -4x + 3; relative to f(x) = 4x 
A. Moved right 3 unit(s);
reflected across x-axis
B. Moved right 3 unit(s);
reflected across x-axis
C. Moved left 3 unit(s);
reflected across x-axis
D. Moved left 3 unit(s);
reflected across x-axis
Multiply.-10x7(5x4 + 10)
A. -150x7 B. -50x11 - 100x7 C. -50x4 - 100 D. -50x11 + 10
Solve the problem.Find two numbers whose sum is 300 and whose product is as large as possible.
A. 1 and 299 B. 150 and 150 C. 10 and 290 D. 149 and 151