20 points
(a) Expand and simplify (9x - 2)(x + 2)
(b) Factorise fully 18a² + 45a
(c) Factorise y² - 10y + 24

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

The accompanying data represent the miles per gallon of a random sample of cars with a three-cylinder, 1.0 liter engine. (a) compute the z-score corresponding to the individual who obtained 42.342.3 miles per gallon. interpret this result.

Which angle is the smallest? also give me an explanation so i can complete it to other questions as well, : )