I'm bored who Else is bored​

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

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.