State whether the function is a probability mass function or not.f(x) = 
x, for x = -2, 4, 7, 11
A. No
B. Yes
Answer: A
Mathematics
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Evaluate the integral.
A. 21 ln 3 B. -42 ln 3 C. -21 ln 3 D. 42 ln 3
Mathematics
Write the Hindu-Arabic numeral in expanded form.710,002,002
A. (7 × 108) + (1 × 107) + ( 0 × 106) + ( 0 × 105) + ( 0 × 104) + (2 × 103) + ( 0 × 102) + ( 0 × 101) B. (7 × 108) + (1 × 107) + ( 0 × 106) + ( 0 × 105) + ( 0 × 104) + ( 0 × 102) + ( 0 × 101) + (2 × 1 ) C. (7 × 108) + (1 × 107) + ( 0 × 106) + ( 0 × 105) + ( 0 × 104) + (2 × 103) + ( 0 × 102) + ( 0 × 101) + (2 × 1 ) D. (7 × 108) + ( 0 × 106) + ( 0 × 105) + ( 0 × 104) + (2 × 103) + ( 0 × 102) + ( 0 × 101) + (2 × 1 )
Mathematics
Use the rules for exponents to rewrite the expression and then evaluate the new expression. 
A. 
B. -4
C. 2
D. - 
Mathematics
Solve each proportion for the given variable.
= 
A. 
B. 6
C. 6
D. 7
Mathematics