A rectangular swimming pool has a length of l yards and a width of 4 yards less than its length. How much does it cost to border the outside of the pool using 1–yard square tiles that cost $6 each? A) 4L-4 dollars
B)24L-24 dollars
C)24L-32 dollars
D)24L-48 dollars

Jabari is power washing houses for a summer job. for every job, he charges an initial fee plus $30 for each hour of work. his total fee for a 4 -hour job, for instance, is $170 . jabari's total fee,f, for a single job is a function of the number,t, of hours it takes him to complete the job. write the function's formula.

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.

For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =