MARKING PEOPLE AS BRAINLIST

What type of triangle is this?

1.) 2x + y = 3 2.) x - 2y = -1 if equation 1 is multiplied by 2 and then the equations are added, the result is a.3x = 2 b.3x = 5 c.5x = 5

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?