Answer these 2 questions

(3x - 13)
and
(2x + 4)

Write the expression 7x^3-28xy^2 as the product of 3 factors

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25