What fraction is not equivalent to 1/5

Solve 4 ln x=2ln25 a) x=5 b) x=25 c) x=625

14+2 (56-1) this is an arithmetic sequence

Aski resort is charging $37.50 to rent a snowmobile for 5 hours. at this rate what will be the cost for a family of 5 to rent snowmobiles for 3 hours on the first day of their vacation and 4 hours for on the last day of their vacation