exam Maths Puzzle Numerical Ability

IF POINTS A,B, AND C LIE ON A COORDINATE LINE AND POINTS A AND B HAVE COORDINATES 15 AND 7 RESECTIVELY, THEN WHICH OF THE POSSIBLE COORDINATES FOR OINT C SATISFY(ies) d(A,C)<D(B,C)

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exam Other Question

If you are standing 85ft from the base of a flagpole,and determine that at ground level,you would need to look up at a 30 degree angle to see the top of the flagpole,how tall is the flagpole?Round the height to tenths. Use the given functions f and g to find f+g, f-g, fg, f/g. State the domain of each.

(a) f(x)=x^2-25 g(x)=x-5
(b) f(x)=v----x^2-9 g(x)=x-3

***v---- means square root