Matt, ricky, and sam had a pushup contest. matt did 63 pushups and ricky did 8 less than matt. how many did sam do?

7+ 2[(5^2)*152%]= answer as soon as you can

Can someone explain the elimination method to me for this problem?

Let f (x) = x e8x. find a formula for the nth derivative of f, where n is any positive integer. use x and n in your answer if needed. f (n)(x) =