Triangle ABC:
m∠A = x° (m∠A is represented by x°)
m∠B = (4x)° (m∠B is 4 times greater than m∠A, you know m∠A is x°, so it is (4x)°)
m∠C = (5x - 30)° (m∠C is 30° less than five times m∠A, so it is (5x - 30)°)
A triangle is 180°, so the angles in the triangle should add up to 180°
The second option is FALSE, so everything else is true
