Find the area of the surface obtained by rotating the curve about the y-axis.
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Factor completely, or state that the polynomial is prime.9x2 - 16
A. (3x + 4)2 B. (3x - 4)2 C. prime D. (3x + 4)(3x - 4)
Solve the problem. Round approximations to the nearest cent.The United Way had six large donations: $3682.38, $8297.90, $1237.77, $6721.73, $4216.67, and $3083.82. Find the mean donation.
A. $6810.07 B. $5436.05 C. $4540.05 D. $5448.05
Provide the proper response.In the ellipse 
+ 
= 1, what is the equation of the horizontal axis of symmetry? The vertical axis of symmetry?
A. Horizontal: y = 5; Vertical: x = -8 B. Horizontal: y = 5; Vertical: x = 8 C. Horizontal: y = 8; Vertical: x = -5 D. Horizontal: y = -5; Vertical: x = 8
Solve the problem.The table lists the amount of emissions of a certain pollutant in millions of tons.
If the amount of emissions is modeled by a function of the form 
where x is the year, estimate the year in which the amount of emissions will be 
tons.
A. 2020 B. 2090 C. 2050 D. 2075