State whether the given function is linear and constant, linear but not constant, or nonlinear.f(x) = 4
A. linear, constant
B. none of these
C. nonlinear
D. linear, but not constant
Answer: A
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For the curve r(t), write the acceleration in the form aTT + aNN.r(t) = (t2 - 3)i + ( 2t - 9)j + 8k
A. a = 
T + 
N
B. a = 
T + 
N
C. a = 
T + 
N
D. a = 
T + 
N
Find the derivative of the function.f(x) = 
A. 
B. 
C. 
D. 
Solve the problem.Suppose a business can sell x gadgets for p = 250 - 0.01x dollars apiece, and it costs the business 
dollars to produce the x gadgets. Determine the production level and cost per gadget required to maximize profit.
A. 13,750 gadgets at $112.50 each B. 11,250 gadgets at $137.50 each C. 10,000 gadgets at $150.00 each D. 111 gadgets at $248.89 each
Find the exact value under the given conditions.sin ? = 
, 0 < ? < 
; cos ? = 
, 0 < ? < 
Find cos (? + ?).
A. 
B. 
C. 
D. 