exam Maths Puzzle Numerical Ability

I think I did this right but want to make sure. im solving for x. 2(x-5)^2=3 I got x=(rad)(3/2) + 5 am i right?

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1. The equation y = - 1777x + 27, 153 can be used to predict the number y of gun deaths in the United States x years after 2000, that is x = 0 corresponds to 2000, x = 2 correspon Victor earns $3 an hour working after school and $4 an hour working on saturdays. Last week he earned $43, working a total of 13h. How many hours did he work on saturday?