An arithmetic sequence has these properties a1=2 an=an-1+5 what are the first four terms in the sequence

a. 2,5,7,12
b.2,5,10,15
c.2,7,12,17
d.2,7,9,14

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

What is the missing step in this proof ?

Amovie streaming service charges it’s customers $15 a month. martina has $98 saved up. will she have any money left over if she pays for the maximum amount of months she can afford? explain.