exam Maths Puzzle Numerical Ability

Hi Can I have some help with the following function?
Consider the following.

f(x) = -10x^2 + 6, g(x) = 3x - 7
(a) Find the function f compose g.

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exam Other Question

Can someone help me on this problem?

I need to find the constant of variation k

m varies directly with n; m = 144 when n = 8

Thanks,
Ashley Pg. 267
96) Area of a parallelogram. Find a trinomial that represents the area of a parallelogram whose base is 3x + 2 meters and whose height is 2x + 3 meters.
answer: 6x^2+13x+6 sq. m.