Help me fast i am in school and i need to finish this

Which is an equation for the nth terms of the sequence 12,15,18,21

(01.02 lc) angle abc has point e on ray ba and point d on ray bc. points e and d are equidistant from point b. to bisect angle abc, which of the following needs to be identified for the construction? the distance between points e and d the point in the angle that is equidistant from points e and d the endpoint of rays ba and bc the point outside of the angle that is equidistant from points e and d

Leslie started last week with $1200 in her checking account. during the week, she wrote the checks below.