For the given function, find the requested relative extrema or extreme value.y = xe4x; relative extrema
A. (1/4, 1/(4e)), relative maximum
B. (1/4, e/4), relative minimum
C. (- 1/4, - e/4), relative maximum
D. (- 1/4, - 1/(4e)), relative minimum
Answer: D
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Factor the difference of squares. If the polynomial cannot be factored, write "prime."169k2 - 9m2
A. (13k + 3m)(13k - 3m) B. (13k - 3m)2 C. prime D. (13k + 3m)2
Multiply.-0.8 ? (-19.3)
A. 15.44 B. 20.1 C. -18.5 D. -20.1
Solve the problem.Suppose the sales of a particular brand of appliance satisfy the relationship 
, where S(x) represents the number of sales in year x, with 
corresponding to 2010. In what year would the sales be 4320?
A. 2019 B. 2021 C. 2018 D. 2020
Use the Pythagorean theorem to find the missing side of the right triangle with legs a and b, and hypotenuse c. Approximate values to the nearest tenth when appropriate.a = 11 in., b = 16 in.
A. 19.4 in. B. 377 in. C. 13.5 in. D. 188.5 in.