Identify the constant of proportionality in each group and use it as an equation in the form y= kx

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?

Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. your data indicates that of twenty-one days with less than three inches of snow, five were snow days, while of the eight days with more than three inches of snow, six were snow days. if all you know about a day is that it is snowing, what is the probability that it will be a snow day?