Of the following sets, which number in { 0,1,2,3,4} make the inequality 7 x + 3< 17 true

0 and 1 make it true, two makes it equal, and everything else makes it wrong.

Use pythagorean’s theorem and find the missing side lengths of the two smaller triangles and add them together
13^2 - 12^2 = 5
15^2 - 12^2 = 9
5+9 = 14
14 is the length of each side of the square
14^2 + 14^2 = 19.8
19.8 is the diagonal length of the inside if the square