The first term of an arithmetic sequence is -5, and the tenth term is 13. Find the common difference. (A) 1.8
(B) 2
(C) 8/9

Marina baked cookies. she gave 3/4 of the cookies to the scout bake sale. she shared the remaining 6 cookies with her friends. how many cookies did marina bake?

Percent increase and decrease. original number: 45 new number: 18

Solve: 25 points find the fifth term of an increasing geometric progression if the first term is equal to 7−3 √5 and each term (starting with the second) is equal to the difference of the term following it and the term preceding it.