David has 4 box of apples. each box has the same number of apples. after david eats three apples there are 109 apples left in the boxes. how many apples were in each box?

I'm so close to finishing all these.

If i have a 24 in loaf of bread and i cut it into two pieces one 9 in how long was the other

The probability that a student graduating from suburban state university has student loans to pay off after graduation is .60. if two students are randomly selected from this university, what is the probability that neither of them has student loans to pay off after graduation?