Find the slope of the polar curve at the indicated point.r = 
, ? = 2?
A. 2?
B. -2?
C. 0
D. Undefined
Answer: B
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Convert as indicated. When necessary, round to the nearest tenth of a degree.39° F to degrees Celsius
A. 12.6° C B. 3.9° C C. 53.7° C D. 102.2° C
Solve the problem.The deflection d (in m) of a diving board x m from the fixed end at the pool side is given by d = kx2(3L - x), where L is the length of the diving board and k is a positive constant. Find the instantaneous rate of change of d with respect to x for x = 1.8 m. Give your answer in terms of k and L.
A. (9.72kL - 5.832k) m/m B. (5.4kL - 1) m/m C. (19.44kL - 9.72k) m/m D. (10.8kL - 9.72k) m/m
Simplify each side of the equation, if possible. Then solve the equation.-2a + 5 + 3a = 10 - 20
A. -15 B. 15 C. 35 D. -35
Solve the problem.The function f(x) = 800(0.5)x/100 models the amount in pounds of a particular radioactive material stored in a concrete vault, where x is the number of years since the material was put into the vault. Find the amount of radioactive material in the vault after 
Round to the nearest whole number.
A. 214 pounds B. 211 pounds C. 555 pounds D. 760 pounds