Which of the following is an arithmetic sequence? A. 7, 11, 15, 19, 23, 28, ...
B. 3, 6, 12, 24, 48, ...
C. 0, 3, 0,6, 0, 9,
D. -3, -7, -11, -15, -19, -23, ...

Chemistry balance then what type of reaction are they i don't know why it keeps saying math when i put chem

Given the following similar triangles what is the area of triangle b ? a) 1 b)1.8 c)3.2 d)5

Shiny white dental insurance costs $258 per year. approximately one-third of insured people need a filling, which averages $110 each. 80% of insured people get a preventive check-up each year, and the average cost of this visit is $95. if you consider shiny white’s income and expenses, what is the expected value of each insured customer?