The following table shows the distribution of household incomes for a sample of 1,000 households in the U.S. with incomes up to $100,000.
Income Bracket
Households270290200140 100?
Let X be the midpoint of a bracket in which a household falls.Find the probability that a U.S. household has a value of X of more than 50,000.
?
A. 
B. ?
C. ?
D. ?
E. ?
Answer: D
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Solve the equation.
(x + 27) - 
(x - 3) = x + 5
A. 
B. 
C. 
D. 
Determine i) the domain of the function, ii) the range of the function, iii) the domain of the inverse, and iv) the range of the inverse.f(x) = -2x - 1
A. f(x): D = {x|x > -2}, R is all real numbers; f-1(x): D = {x|x < -2}, R is all real numbers B. f(x): D is all real numbers, R = {y|y > -1}; f-1(x): D is all real numbers, R = {y|y < -1} C. f(x): D is all real numbers, R is all real numbers; f-1(x): D is all real numbers, R is all real numbers D. f(x): D = {x|x > -2}, R = {y|y > -1}; f-1(x): D = {x|x < -2}, R = {y|y < -1}
Select the smaller of the two given numbers.-17, -15
A. -17 B. -15
Add or subtract. Simplify the answer.
- 
A. 
B. 
C. 
D. 