Find the reciprocal, if it exists.7.2
A. -7.2
B. No reciprocal
C. -6.2
D. 
Answer: D
Mathematics
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Solve the inequality.For the function g(x) = x4 - 9x2, solve g(x) < 0.
A. (-3, 0) ? (0, 3) B. (-?, -3) ? (0, 3) C. (-3, 0) ? (3, ?) D. (-?, -3) ? (3, ?)
Mathematics
The graph of a function is given. Choose the answer that represents the graph of its derivative.
A. 
B. 
C. 
D. 
Mathematics
One of the values r (radius), d (diameter), C (circumference), or A (area) is given for a particular circle. Find the indicated value. Leave ? in your answer.C = 40? cm; r = ?
A. 20? cm B. 80 cm C. 40 cm D. 20 cm
Mathematics
Find the linear approximating polynomial for the function centered at a.f(x) = 
, a = 27
A. L(x) = 
x + 1
B. L(x) = 
x + 2
C. L(x) = 
x + 6
D. L(x) = 
x + 1
Mathematics