PLEASE HELP I NEED THESE EXERCISES OR I WILL FAIL MATH! PLEASE :((( G is the center of gravity of a triangle
ABC and A ′ is the midpoint of BC and L is the center of gravity of (A, −1), (B, 2), and (C, 2).
1. Show that 4LA ′ = LA. Solve for L
2. Prove that L and G are symmetric relative to A'.

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?