exam Maths Puzzle Numerical Ability

Find the distance between (-3, -2) and (1, 4)

A) sqrt 10
B) 27
C) 2 sqrt 5
D) 2 sqrt 13

Can anyone help me understand this problem? Thank you so very much!!

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exam Other Question
Simplify:
2log(base 4)4 + 3log(base 3)3^2 - log(base 4)(1/16) + log(base 10)10 Graph f(x)=-2x+2