Combine like terms in the expression. Answer "not possible" if terms cannot be combined.90m2n + 40m2n
A. 260m2n
B. 130m2n
C. 130m2
D. 36m2n
Answer: B
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Find the center, foci, and vertices of the ellipse.
+ 
= 1
A. center at (0, 0)
foci at (0, -4) and (0, 4)
vertices at (0, -16), (0, 16)
B. center at (0, 0)
foci at (- 2
, 0) and (2
, 0)
vertices at (-4, 0), (4, 0)
C. center at (0, 0)
foci at (0, 4) and (2, 0)
vertices at (0, 16), (4, 0)
D. center at (0, 0)
foci at (0, - 2
) and (0, 2
)
vertices at (0, -4), (0, 4)
Evaluate.Given that log x = 5 and log y = 6, find log xy2.
A. 60 B. 17 C. 180 D. 22
Solve the problem.The energy E (measured in joules) released by an earthquake of magnitude M on the Richter scale 
is given by the equation 
. Suppose an earthquake registers 5.8 on the Richter scale. Let I0 = 1. How many joules of energy were released?
A. E = 105.8 joules B. E = 13.110 joules C. E = 1013.1 joules D. E = 5.810 joules
Find a rectangular equation for the plane curve defined by the parametric equations.x = ln t, y = t, for t in (0, ?)
A. y = ln x B. ex = ln y C. x = ey D. y = ex