Determine whether f is continuous at c.f(x) = 
; c = -4
A. continuous
B. not continuous
Answer: B
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(8, -14) and (14, 19)
A. - 
B. 
C. 
D. 
Solve the problem.A forest ranger at Lookout A sights a fire directly north of her position. Another ranger at Lookout B, exactly 2 kilometers directly west of A, sights the same fire at a bearing of N41.2°E. How far is the fire from Lookout A? Round your answer to the nearest 0.01 km.
A. 2.25 km B. 2.28 km C. 2.18 km D. 2.32 km
Use an identity to write the expression as a single trigonometric function or as a single number.
A. 
B. 
C. 
D. 
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