Find the probability.A card is drawn from a well-shuffled deck of 52 cards. What is the probability of drawing an ace or a 8?
A. 9
B. 
C. 
D. 
Answer: D
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Solve the problem.The position of a particle moving along a coordinate line is s = 
with s in meters and t in seconds. Find the particle's acceleration at 
A. - 
m/sec2
B. 
m/sec2
C. - 
m/sec2
D. 
m/sec2
Solve.How long will it take for prices in the economy to double at a 5% annual inflation rate? Use the exponential growth model P(t) = P0ekt.(Round to the nearest year.)
A. 17 yr B. 23 yr C. 14 yr D. 12 yr
Use the graph to find a ? > 0 such that for all x, 0 < 
< ? ? 
< ?.
A. 0.27 B. 0.24 C. 0.51 D. 2
Compare the right-hand and left-hand derivatives to determine whether or not the function is differentiable at the point whose coordinates are given.
y = xy = 2x
A. Since limx?0+ f '(x) = -2 while limx?0- f '(x) = -1, f(x) is not differentiable at x = 0. B. Since limx?0+ f '(x) = 2 while limx?0- f '(x) = 1, f(x) is not differentiable at x = 0. C. Since limx?0+ f '(x) = 1 while limx?0- f '(x) = 2, f(x) is not differentiable at x = 0. D. Since limx?0+ f '(x) = 1 while limx?0- f '(x) = 1, f(x) is differentiable at x = 0.