What types of triangles have at least two acute angles? - right - obtuse - equilateral - isosceles

Which graph corresponds to the function f(x) = x2 + 4x – 1?

Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).

Consider the input and output values for f(x) = 2x - 3 and g(x) = 2x + 7. what is a reasonable explanation for different rules with different input values producing the same sequence?