Find the limit L for the given function f, the point x0, and the positive number ?. Then find a number ? > 0 such that, for all x, 
f(x) = 
, x0 = 2, ? = 0.4
A. L = 2; ? = 0.48
B. L = 2; ? = 0.59
C. L = 3; ? = 0.48
D. L = j-1; ? = 0.21
Answer: A
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Perform the indicated operation. Simplify the result if possible.13 ft 10 in. + 8 ft 10 in.
A. 22 ft 10 in. B. 21 ft 8 in. C. 22 ft 8 in. D. 21 ft 10 in.
Divide the polynomial by the monomial.
A. 3y7 - 5y3 B. 12y6 - 20y2 C. 3y6 - 5y2 D. 3y8 - 5y4
The position vector of a particle is r(t). Find the requested vector.The velocity at t = 
for r(t) = 4sec2(t)i - 6tan(t)j + 9t2k
A. v
= -12j + 
?k
B. v
= 16i - 12j + 
?k
C. v
= 16i + 12j - 
?k
D. v
= -12j - 
?k
Solve.A tool and die company machines a part that is supposed to measure 8.75 mm in diameter. For quality control purposes, ten parts are selected at random and measured to determine how closely they match the specified diameter. The results are as follows:8.758.738.748.758.758.768.738.758.748.76(a) Find the range of the measurements.(b) Find the standard deviation of measurements.
A. (a) 0.04 mm, (b) 0.01 mm B. (a) 0.03 mm, (b) 0.01 mm C. (a) 0.03 mm, (b) 0.02 mm D. (a) 0.04 mm, (b) 0.02 mm