Determine where the given function is increasing and where it is decreasing. f(x) = 45x3 - 3x5
A. Decreasing on (-?, -3] and [3, ?), increasing on 
B. Decreasing on (-?, -3] and [0, 3], increasing on 
and [3, ?)
C. Increasing on (-?, -3] and [0, 3], decreasing on 
and [3, ?)
D. Increasing on (-?, -3] and [3, ?), decreasing on 
Answer: A
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Graph the curve over the given interval together with its tangent at the given value of x. Graph the tangent with a dashed line.y = cot(x), -2? ? x ? 2?, x = 
A. 
B. 
C. 
D. 
How many significant digits are in a measurement of 2000mL?
A. 1 B. 2 C. 4 D. undetermined
Answer the question.Choose the expression that is equivalent to the following: 4 - 4
A. 4 + (-4) B. (-2)(4) C. (4)(4) D. 2(4)
Use the method of natural frequencies to find the indicated probability.In the town of Maplewood a certain type of DVD player is sold at just two stores. 27% of the sales are from store A and 73% of the sales are from store B. 2.4% of the DVD players sold at store A are defective while 4.2% of the DVD players sold at store B are defective. If Kate receives one of these DVD players as a gift and finds that it is defective, what is the probability that it came from store A?
A. 0.174 B. 0.024 C. 0.826 D. 0.211