Solve the problem.A bag of marbles has twice as many blue marbles as green marbles, and the bag has at least 51 marbles in it. At least how many green marbles does it have?
A. At least 34 green marbles
B. At least 26 green marbles
C. At least 18 green marbles
D. At least 17 green marbles
Answer: D
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Provide an appropriate response.Solve the equation: -5x = 20
A. x = 
B. x = 4
C. x = -4
D. x = 25
Use the rules of exponents to simplify the expression. Use positive exponents to write the answer.
A. 
B. 
C. 7x3ab
D. 
Factor the polynomial completely.36 - (m + 2n)2
A. (6 + m + 2n)(6 - m - 2n) B. (36 + m + 2n)(36 - m - 2n) C. (6 - m - 2n)(-6 - m - 2n) D. (6 + m + 2n)(6 - m + 2n)
The table shows the monthly revenue y (in thousands of dollars) of a landscaping business for each month of the year 2008, with x = 1 representing January.
?
x y 1 6.0 26.1 37.1 49.2 5 12.3 6 16.4 7 12.2 8 10.2 9 8.3 10 6.3 11 4.3 12 2.4 ?
A mathematical model that represents these data is:
?
?
Find f (1) and f (12).
?
A. 
B. 
C. ?
D. 
E. 