Solve the problem.Find the derivative of the function 
at the point 
in the direction in which the function increases most rapidly.
A. 
B. 
C. 
D. 3
Answer: B
Mathematics
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Solve the problem.Find the number of units that must be produced and sold in order to yield the maximum profit, given the following equations for revenue and cost:R
= 4xC
= 0.01x2 + 1.4x + 20.
A. 540 units B. 260 units C. 270 units D. 130 units
Mathematics
Use a polar coordinate system to plot the point with the given polar coordinates.(4, -135°)
A. 
B. 
C. 
D. 
Mathematics
Solve the problem. Round your answer to the nearest tenth, when appropriate. Use the formula 
, as needed.Find the [H3O+] if the pH = 2.3.
A. 2.7 × 101 B. 5.0 × 10-3 C. 2.0 × 102 D. 3.6 × 10-1
Mathematics
Solve the inequality and graph. Express your answer in interval notation.24x + 8 > 4(5x + 7)
A. [5, ?)
B. (-?, 5]
C. (-?, 5)
D. (5, ?)
Mathematics