Which recursive formula can be used to reresent the sequence 2,6,10,14,18 1. a = 0 1 a = a + 4 n n-1 2. a = 2 1 a = a +4 n-1 n 3. a = 2 1 a = a -4 n n-1 4. a = 2 1 a = a +4 n n-1

Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares

Can someone tell me if this is perpendicular? !