Simplify the expression. Write the result using positive exponents only.
A. p8
B. 
C. 
D. p9
Answer: D
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A point on the terminal side of an angle ? is given. Find the exact value of the indicated trigonometric function of ?.(-3, 4)Find sin ?.
A. 
B. - 
C. 
D. - 
Solve the problem.The table shows the number of dollars spent in Country X (in millions) on environmental protection programs during the years 
through 
. Use least-squares regression to find the polynomial function that best models these data. Round coefficients to three decimal places. 
A. f(x) ? 0.005x3 - 0.102x2 + 0.805x + 4.697 B. f(x) ? -0.010x2 + 0.446x + 5.759 C. f(x) ? 0.007x3 - 0.105x2 + 0.805x + 4.397 D. f(x) ? -0.010x2 + 0.346x + 5.253
Sketch the graph of the polynomial function.f(x) = 4x4 - x3 + 3x2 + 5x + 4
A. 
B. 
C. 
D. 
Find the center, foci, and vertices of the ellipse.
+ 
= 1
A. center at (0, 0)
foci at (0, 8) and (4, 0)
vertices at (0, 64), (16, 0)
B. center at (0, 0)
foci at (- 4
, 0) and (4
, 0)
vertices at (-8, 0), (8, 0)
C. center at (0, 0)
foci at (0, - 4
) and (0, 4
)
vertices at (0, -8), (0, 8)
D. center at (0, 0)
foci at (0, -8) and (0, 8)
vertices at (0, -64), (0, 64)