Provide an appropriate response.Express in scientific notation: 7,215
A. 0.7215 × 104
B. 7.215 × 103
C. 7.215 × 104
D. 72.15 × 102
Answer: B
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Solve the problem.The power P (in W) generated by a particular windmill is given by 
where V is the velocity of the wind (in mph). Find the instantaneous rate of change of power with respect to velocity when the velocity is 
A. 97.3 W/mph B. 21.9 W/mph C. 9.9 W/mph D. 0.7 W/mph
Solve the exponential equation. Round to three decimal places when necessary.
= 4
A. No solution B. -0.168 C. 1.386 D. -0.549
Match the given equation with one of the graphs.3x2 - 48y = 24
A. 
B. 
C. 
D. 
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