It takes mike 18 minutes to finish reading 4 pages of a book .how long does it take for him to finish reading 30 pages

What is the solution to the division problem below x3+x2-11x+4/x+4

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2

Twelve different video games showing substance use were observed and the duration times of game play (in seconds) are listed below. the design of the study justifies the assumption that the sample can be treated as a simple random sample. use the data to construct a 99% confidence interval estimate of μ, the mean duration of game play. 4028 4316 4816 4650 4036 5010 4833 4331 4307