Solve the problem.The approximate monthly average temperatures in degrees Fahrenheit in a certain city can be approximated by the function  f(x) = -0.005x6 + 0.31x4 - 6.14x2 + 83with domain {x|-6 ? x ? 6}. Here x represents the month with  corresponding to July. What other month has the same average temperature as March?

A. September
B. October
C. November
D. December


Answer: C

Mathematics

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Evaluate.

A. -8 B. -9 C. 9 D. -10

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Find the directional derivative of the function f(x,y) = at the point p(7, 0) in the direction of the unit vector that makes the angle with the positive x-axis.

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Find the quotient.

A. 6 B. 1 C. 0 D. undefined

Mathematics

Plot the following points and find the distance between the points. ? (-5, 8), (7, 2) ?

A. ?

Distance:


B. ?

Distance:


C.

Distance:


D. ?

Distance:


E. ?

Distance:


Mathematics