Use negative exponents where necessary to write the expression with all variables in the numerator of a term. That is, write each term in the form cxn if the term contains a variable.y = 7x2 + 5 - 
+ 
A. y = 5 - 3x-1 + 10x-2
B. y = 7x2 + 5 - (3x)-1 + (3x)-2
C. y = 7x2 + 5 + x-1 + x-2
D. y = 7x2 + 5 - 3x-1 + 3x-2
Answer: D
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Assume the median income of a high school graduate is 42,833 dollars per year. For each year of college education, median income increases by 17%. What is the expected median income if 4 years of college are completed? Round your answer to the nearest cent. ? ?
A. 80,264.21 dollars per year B. 71,959.44 dollars per year C. 50,114.61 dollars per year D. None of the above
a and b represent the two legs of a right triangle, while c represents the hypotenuse. Find the length of the unknown side.
A. b = 25 B. b = 18 C. b = 20 D. b = 24
Use U = universal set = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, A = {1, 2, 3, 5, 8}, B = {2, 3, 5, 7}, and C = {1, 4, 9} to find the set.
A. {0, 2, 3, 4, 5, 6, 7, 8, 9} B. {1, 2, 3, 4, 5, 6, 7, 8, 9} C. {1} D. {1, 2, 3, 4, 5, 7, 8, 9}
Graph the inequality.x > 2 
A. 
B. 
C. 
D. 