Abag contains 5 blue, 8 red, and 7 green marbles. a marble is selected at random. find the probability the marble is not red

Adriano loves anime and collects toys from his favorite series.each month he gains 4 toys. if adriano has 3 toys when he starts collecting, how many does he have after 4 months

What is the number 321,000,000 in scientific notation? also what is the number? ?

Suppose your school costs for this term were $4900 and financial aid covered 3/4 of that amount. how much did financial aid cover? and how much do you still have to pay?