Tell whether the sequence is arithmetic. if it is, what is the common difference?
a. -6,2,10,18,
b. 1,2,4,8,

Pls never taught i’m really confused and i rlly need

How do you find the distance of each number from the mean

15. jiovanni is looking in to two different companies that offer study guides for math exams.test prep 101 charges a $5 flat fee and an additional $0.25 per problem.math charges a $2 flat fee and an additional $0.50 per problem.how many prablems would make the costs of the two companies be equal? varibles: equations/eniqualities{ {