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. 
= -0.024x4 + 0.420x3 - 1.06x2 + 1.79x
B. 
= -0.006x3 + 0.140x2 - 0.53x + 1.79
C. 
= -0.024x3 + 0.420x2 - 1.06x + 1.79
D. 
= -0.018x3 + 0.280x2 - 0.53x + 1.79
Answer: C
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Solve the problem.Fireworks are launched into the air. The quadratic function 
models the fireworks' height, y, in feet, x seconds after they are launched. When should the fireworks explode so that they go off at the greatest height? What is that height? (Round answers the nearest hundredth.)
A. -6.22 sec, 612.77 ft B. 6.22 sec, 624.77 ft C. 6 sec, 199 ft D. 1104 sec, 6 ft
Draw a complete graph so that it has the given type of symmetry.Symmetric with respect to the x-axis
A. 
B. 
C. 
D. 
Solve the problem.Find and simplify f(5m + 6) given f(x) = x2 - 3x.
A. 25m2 + 60m + 33 B. 25m2 + 45m + 18 C. 25m2 + 45m + 42 D. 25m2 - 15m + 18
Graph the exponential function.y = 23x-3 
A. 
B. 
C. 
D. 