exam Maths Puzzle Numerical Ability

I would like some help with this problem Thanks
Find the value of x

3+x-2(-4)=7-(-13)

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exam Other Question

How do you detemine the range of the function y=-2x+x when the domain is {1,3,5} The height (h) in feet that is kicked by Vinnie Buttiero can be modeled by the equation h=-16x(to the 2 power)+48x+16, where x is the time inseconds after the kick. Find the footba