Solve. Give your answer as a mixed numeral.A nail 6
inches long is driven into a board 1
inches thick. How much of the nail protrudes from the other side of the board?
A. 4
in.
B. 
in.
C. 
in.
D. 9 in.
Answer: A
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Solve.A railroad tunnel is shaped like a semi-ellipse. The height of the tunnel at the center is 16 ft and the vertical clearance must be 12 ft at a point 14 ft from the center. Find an equation for the ellipse.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Find the slope (if defined) of the line that passes through the given points.(-6, 5) and (-5, 5)
A. - 
B. Undefined
C. 10
D. 0
Find the fifth term and the nth term of the geometric sequence whose initial term, a, and common ratio, r, are given.a = 2; r = -5
A. a5 = -250; an = 2 ? (-5)n B. a5 = -250; an = 2 ? (-5)n-1 C. a5 = 1250; an = 2 ? (-5)n D. a5 = 1250; an = 2 ? (-5)n-1
For those which are polynomial functions, find the degree, the leading term, and the leading coefficient.f(x) = -5
A. Degree: 1, leading term: -5, leading coefficient: -5 B. not a polynomial function C. Degree: 0, leading term: -5, leading coefficient: -5 D. Degree: 0, leading term: -5x, leading coefficient: -5