Question

If x= 2 and y=1, what is the value of the expression 3(y-1) + 2r?

HELP ME PLZ-

Answer 1

`3(1 - 1) + \sqrt{ {2}^(2) + {1}^(1) } ) \\ or \: \ 0 + √(5)`

=√5, where r=√(x^2 +y^2)