Graph the system of inequalities.3y - x ? 9y + 2x ? 10y ? 0
A. 
B. 
C. 
D. 
Answer: D
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Find the limit, if it exists.
A. 5 B. -1 C. Does not exist D. 0
Find the indicated probability.The table shows the distribution of family size in a certain U.S. city Family Size Probability 20.457 30.203 40.198 50.088 60.036 7+0.018A family is selected at random from the city. Find the probability that the size of the family is between 2 and 5 inclusive. Round approximations to three decimal places.
A. 0.858 B. 0.401 C. 0.545 D. 0.946
The population aged 65 years old and older (in millions) from 2000 to 2050 is projected to be
?
?
where 
is measured in decades, with 
corresponding to 2000. What will be the average population aged 65 years and older over the years from 2000 to 2040?
(Hint: The average population is given by 
. Multiply the integrand by 
and then use the method of substitution.) Please round your answer to one decimal place.
?
__________ million
Fill in the blank(s) with the appropriate word(s).
Solve the problem.The area of the rectangle below is 
Find another expression for this area by finding the sum of the areas of the smaller rectangles.
A. 3z2 + 8z + 72 B. 3z2 +35z C. 3z2 + 27z +72 D. 3z2 + 35z + 72