Solve the problem.Median family income in Country X between 1990 and 1999 can be modeled by 
where x is the year. Determine symbolically when the median income was $42,216.
A. x ? 1998
B. x ? 2000
C. x ? 1994
D. x ? 1996
Answer: D
Mathematics
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Let A = {1, 3, 5, 7}, B = {5, 6, 7, 8}, C = {5, 8}, D = {2, 5, 8}, and U = {1, 2, 3, 4, 5, 6, 7, 8}. Decide if the set relationship is true or false.A ? {7, 5, 3, 1}
A. True B. False
Mathematics
Graph the solution set of the system of inequalities or indicate that the system has no solution.
A. 
B. 
C. 
D. 
Mathematics
Solve the system of equations using substitution.
A. x = 3
, y = 
or (3
, 
)
B. x = 
, y = 3
or (
, 3
)
C. x = 
, y = 9 or (
, 9)
D. x = 9, y = 
or (9, 
)
Mathematics
Rationalize the denominator. Assume all variables have positive values.
A. 
B. 21
C. 310
D. 
Mathematics