Find the variance of the probability density function to the nearest hundredth.f(x) = 3x-4; [1, ?)
A. 0.50
B. 0.73
C. 0.69
D. 0.75
Answer: D
Mathematics
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Tell which set or sets the number belongs to: natural numbers, whole numbers, integers, rational numbers, irrational numbers, and real numbers.2.23
A. rational, real B. natural, rational, real C. rational D. real
Mathematics
Determine whether or not the function is one-to-one.f(x) = |64 - x2|
A. Yes B. No
Mathematics
Multiply or divide as indicated. Write the answer in lowest terms.4 ? 
A. 12
B. 12
C. 11
D. 12
Mathematics
Solve the problem.Find real numbers a, b, and c such that the graph of the function y = ax2 + bx + c contains the points 
, (2, 4), and (-3, 29).
Fill in the blank(s) with the appropriate word(s).
Mathematics