It has 3 more vertices than a triangle

And explain how you got it so i can understand future problems : 3

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days

Let f(x) = 3 − x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.