karen and kevin collect coins.
karen has x coins.
kevin has 2 coins fewer than three times the number of coins karen has.
write and simplify an expression for the total number of coins karen and kevin have.

Determine if the sequence is geometric. if it is, find the common ratio. 1) -2, 2/3, -2/9, 2/27 2) 0,2,5,9 3) 2, -10, 50, -250 4) 1,4,16,64

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Peter applied to an accounting firm and a consulting firm. he knows that 30% of similarly qualified applicants receive job offers from the accounting firm, while only 20% of similarly qualified applicants receive job offers from the consulting firm. assume that receiving an offer from one firm is independent of receiving an offer from the other. what is the probability that both firms offer peter a job?