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 1995?
A. 10.87 millions
B. 3.07 millions
C. 9.57 millions
D. 21.85 millions
Answer: C
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Solve the problem.Your electrical bill states that you used 840 kilowatt-hours of energy in September. Determine your average power use, in watts.
A. 1400 watts B. 1166.7 watts C. 1129 watts D. 1283.3 watts
Graph the function to find the stated characteristic of the graph.Graph f(t) = 3.5sin (
t + 
) -1 in 
by 
. State the phase shift.
A. - 
B. - ?
C. 
D. 2?
Write the slope-intercept form of the equation for the line passing through the given pair of points.
and 
A. y = 
x + 
B. y = 
x - 
C. y = 
x
D. y = - 
x
Solve the system. 5x + z = -29 w + x + 3y - z = 145w + y + 3z = 21 w + x + 2y = 7
A. (30, -25, 6, -20) B. (6, -5, 6, -4) C. (6, -25, 6, -8) D. (6, -5, 3, -4)