Give an appropriate answer.Let
f(x) = 2. Find
(-4)f(x).
A. 16
B. -4
C. 2
D. 4096
Answer: A
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Provide an appropriate response.Calculate the greatest possible error for the measurement 4 
ft.
Fill in the blank(s) with the appropriate word(s).
Solve the problem.In a study of 135 women, roughly half took estrogen as well as calcium and vitamin D supplements and received regular dental checkups. The remaining women received the supplements and the checkups but substituted a sugar pill for the estrogen. Those who received the estrogen had an average 3.6 percent gain in bone density compared to a 0.2 percent bone density improvement in those taking the sugar pill. This study can best be described as
A. a survey using quota sampling. B. a controlled placebo experiment. C. a census. D. a survey using simple random sampling. E. the placebo effect.
Sketch the plane in a three-dimensional space represented by the equation.
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Two dice are rolled. Find the probability of the event described.The score on the dice is 3 or the dice both show the same number ("doubles").
A. 
B. 
C. 
D. 