Solve.It is estimated that y, the number of items of a particular commodity (in millions) sold in the United States in year x, where x represents the number of years since 1990, is given by the formula 
That is, 
represents 1990, 
represents 1991, and so on. According to the formula, how many items sold in 2000?
A. 4.49 millions
B. 25.50 millions
C. 23.59 millions
D. 64.00 millions
Answer: C
Mathematics
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Solve.Find a linear function g such that g(4) = -31 and g(5) = -39.
A. g(x) = 
x - 
B. g(x) = -8x + 1
C. g(x) = - 
x - 
D. g(x) = 8x - 63
Mathematics
Simplify the expression. Assume that all variables are positive when they appear.
A. 
B. 
C. 
D. 
Mathematics
Find the specified value of the objective function f on the given region.
Maximum of f = x + 8y
A. 94 B. 120 C. 76 D. 102
Mathematics
Provide an appropriate response.In what quadrant of the cartesian system does P(5, -4) lie?
A. III B. I C. II D. IV
Mathematics