9. Given p = 2i + 2j + k and q = 4i + k. Find (a) p • q
please help ASAP for 25 points and brainliest :)

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

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.

Which of the following exponentially equations is equivalent to the logarithmic equation below?