Using the derivative of f(x) given below, determine the intervals on which f(x) is increasing or decreasing.f'(x) = (x - 7) e-x
A. Increasing on (-?, 7); decreasing on (7, ?)
B. Decreasing on (-?, 7); increasing on (7, ?)
C. Decreasing on (-?, -7); increasing on (-7, ?)
D. Increasing on (-?, -7); decreasing on (-7, ?)
Answer: B
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Write the number in decimal notation without the use of exponents.9.32 x 10-4
A. 0.000932 B. 0.00932 C. -932,000 D. 0.0000932
Multiply.
A. x2 - 
x - 
B. x2 - 
x + 
C. x2 - 
x + 
D. x2 + 
Solve the equation.Solve tan ? = 
for ?, where 0° ? ? ? 90°.
A. 60° B. 90° C. 30° D. 45°
Use the discriminant to determine whether the equation has two rational solutions, one rational solution, two irrational solutions, or two nonreal complex solutions. Do not actually solve.v2 + 3v - 3 = 0
A. Two rational solutions B. Two irrational solutions C. Two nonreal complex solutions D. One rational solution