Barry's deck of cards contains 40 blue cards and 70 red cards. maxs deck of cards contains the same number of blue cards, but the ratio of blue cards to red cards to red cards is 8: 9.how many total cards does max's deck of cards contain?

What is this equation in point-slope form?

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?