exam Maths Puzzle Numerical Ability

I am having problems with this problem:

Find f(1) for f(x)= x^3 + x^2 - 1

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exam Other Question

Determine which two equations represent parallel lines.
(a) y = 3/7 x + 4
(b) y = 7/3 x + 9
(c) y = 7/3 x - 9
(d) y = - 3/7 x + 9
Could you please help me?
1. If f(x) = 3x + 1, and g(x) = (x^2 + 5x)^-1/2, find g(f(x))
2. Express as a logarithm of a single number or expression : 3log*10*6 (*10* being the s