Which representation of a transformation on a coordinate grid does not preserve congruence? A (x, y) → (x,-Y) B (x, y) + (x + 7, y + 7) 1 C (x, y) → (5x7Y) , x D (x, y) → (y, -x)

You and a friend race across a field to a fence and back. your friend has a 50-meter head start. the equations shown represent you and your friend's distances dd (in meters) from the fence tt seconds after the race begins. find the time at which you catch up to your friend. you: d=∣−5t+100∣d=∣−5t+100∣ your friend: d=∣−313t+50∣∣

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.

Factor the polynomial by its greatest common monomial factor.