Solve the equation using the quadratic formula.2x2 + 12x = - 7
A. 
B. 
C. 
D. 
Answer: D
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Compare the right-hand and left-hand derivatives to determine whether or not the function is differentiable at the point whose coordinates are given.
y = 
y = -1
A. Since limx?-1+ f '(x) = -1 while limx?-1- f '(x) = 0, f(x) is not differentiable at 
B. Since limx?-1+ f '(x) = 0 while limx?-1- f '(x) = 1, f(x) is not differentiable at 
C. Since limx?-1+ f '(x) = 0 while limx?-1- f '(x) = -1, f(x) is not differentiable at 
D. Since limx?-1+ f '(x) = 0 while limx?-1- f '(x) = 0, f(x) is differentiable at 
Use l'Hopital's Rule to evaluate the limit.
A. -5 B. 1 C. 5 D. 0
Find the sum.0 + (-18)
A. 0 B. 180 C. 18 D. -18
Solve the problem using the idea of labeling.In how many ways can 9 officers be assigned with 3 assigned to parking, 2 assigned to security, and 4 assigned to emergencies?
A. 30,240 B. 1260 C. 15,120 D. 40,320