Write an expression for a and b

pietro used an eight-foot board to cut 3 shelves. each shelf was 2 1/2 feet long.

a. how much board did the 3 shelves use
b. how much, if any, wood did pietro have left?

Y= 4x + 3 y = - 1 4 x - 5 what is the best description for the lines represented by the equations?

Which statement accurately explains whether a reflection over the y axis and a 270° counterclockwise rotation would map figure acb onto itself?

The computer that controls a bank's automatic teller machine crashes a mean of 0.6 times per day. what is the probability that, in any seven-day week, the computer will crash less than 5 times? round your answer to four decimal places