Solve the problem.A balloon used in surgical procedures is cylindrical in shape. As it expands outward, assume that the length remains a constant 
Find the rate of change of surface area with respect to radius when the radius is 
(Answer can be left in terms of ?).
A. 50.24? mm2/mm
B. 50.12? mm2/mm
C. 100.0? mm2/mm
D. 100.24? mm2/mm
Answer: D
Mathematics
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Choose the graph that matches the function. f(x) = - 
x - 3
A. 
B. 
C. 
D. 
Mathematics
Evaluate the indicated function with the given information.Find sin 2x if cos x = 
(in fourth quadrant).
A. - 
B. 
C. - 
D. 
Mathematics
Solve the problem. Round to the nearest cent.Marc Banks paid $436.49 for round-trip tickets to Hawaii. He paid sales tax at a rate of 6.25%. How much tax did he pay?
A. $272.80 B. $22.92 C. $27.28 D. $31.65
Mathematics
Rationalize the denominator. Simplify, if possible. Assume that any variables represent positive real numbers. 
A. 
B. 
C. 
D. 
Mathematics