exam Maths Puzzle Numerical Ability

Solve and graph the solution set
10x +4 equal to or greater than 9x +16

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exam Other Question

1. f(13)
2. f(f(2)+f(3))
3. (f(1+4))/(f(1)+4)-(1/4)(4/f(1))
Solve

5(x-2)^2 = 3

I cannot figure out!