Can someone please help me

Which statement is true 1.the pythagorean theorem can be used to find the missing side of any triangle 2.the pythagorean theorem can be used to find the missing side of any polygon 3. the pythagorean theorem can be used to find the missing side of any right triangle 4.the pythagorean theorem can be used to find the missing side of any isosceles triangle

Which of the fallowing best completes the sequence 5,10,15, a) 30 b) 22 c)25 d)35

Complete the standard form of the equation that represents the quadratic relationship displayed above, where a, b, and c are rational numbers.