Determine whether the expression is a polynomial. If it is a polynomial, give its degree.7x5 - 
A. not a polynomial
B. polynomial; degree 1
C. polynomial; degree 5
D. polynomial; degree -1
Answer: A
Mathematics
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Write the first four terms of {an}.an = 
A. -1, - 
, - 
, - 
B. -1, 
, - 
, 
C. 1, 
, 
, 
D. 1, - 
, 
, - 
Mathematics
Multiply. Simplify by combining like terms.(x + 14y)2
A. x2 + 28x + 196y2 B. x4 + 196y2 C. 196x2 + 28xy + 196y2 D. x2 + 28xy + 196y2
Mathematics
Solve the problem.A railroad tunnel is shaped like a semi-ellipse. The height of the tunnel at the center is 42 ft and the vertical clearance must be 21 ft at a point 18 ft from the center. Find an equation for the ellipse. 
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Rationalize the denominator.
A. 
B. 
C. 
D. 
Mathematics