book Maths Puzzle Numerical Ability

find the values of f(x) = x squared-1 and g(x)=1-2x, when f(g(1)) and g(f(1))

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book Other Question

Driving down a mountain, Tom finds that he has descended 1800 ft in elevation by the time he is 3.25 mi. horizontally away from the top of the mountain. Find the slope of his descent to the nearest hundredth. The area of a gymnasium floor is 264 square yards. The floor is 11 yards wide. How long is the floor?
a)253 yards
b)24 yards
c)11 yards
d) 242 yards