B. 7/8 because there is 4 green and 3 red and when added up they are 7 which leaves only the yellow which is one out of the probability.
He deposited a total of $180.
Wrote two checks that totaled $80
x=180-80
180-80=100
Therefore, he would have $100 in his checking account after the two checks.
Subtract 20 and 10. To get your answer
