Find an equation for the ellipse described.Foci at (1, 4) and (7, 4); length of major axis is 10
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: B
Mathematics
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A. (8, 5) B. (8, 23) C. (8, -46) D. (8, 7)
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Find the real solutions of the equation.x4 - 8x3 + 16x2 + 8x - 17 = 0
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Use the change of base formula and the properties of logarithms to rewrite the expression as a single logarithm in the indicated base.loge2 x7 + loge3 x15 + loge4 x16, base e
A. ln 
B. 16 ln x
C. 25 ln x
D. ln 
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