Given: 3(x – 4) = 33 prove: x=13 with a two colomn proof

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

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

The ratio of the perimeters of two similar triangles is 4: 3. what are the areas of these triangles if the sum of their areas is 130cm2?