exam Maths Puzzle Numerical Ability

I need help solving:

7x-{3[4(x-2)-3(x+1)]-5(2x-3)}

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exam Other Question

You rent a booth at the carnival for $200. You are sellin turkey legs for $2.50 each. By the end of the carnival you made $650 in profit. Write an equation that can be used to find find the inverse function f(x)=3x^2+12x+6