Find and simplify the difference quotient of f, 
, for the function.f(x) = x2 + 7x + 2
A. 1
B. 
C. 2x+ h + 2
D. 2x+ h + 7
Answer: D
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If f(x,y) = x² + 9y², use the gradient vector ?f(10, 2) to find the tangent line to the level curve f(x, y) = 136 at the point (10, 2). Select the correct answer.
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Choose the best answer.The amount of folic acid in a vitamin capsule is about how much?
A. 56 metric tonnes B. 56 milligrams C. 56 kilograms D. 56 grams
Find the indicated probability. A bag contains 2 red marbles, 3 blue marbles, and 5 green marbles. If a marble is randomly selected from the bag, what is the probability that it is yellow?
A. 1
B. 
C. 0
D. 
List the critical values of the related function. Then solve the inequality.
? 
A. -4, -3, 3, 24; (-?, -4) ? (-3, 3) ? [24, ?) B. -4, -3, 3, 24; (-4, -3) ? (3, 24] C. -3, 3, 24; (-?, -3) ? (3, 24] D. 24; [24, ?)