Can someone help me? I am stuck on this question! and tysm for the people who helped me!! <3 have a nice day!

A6 ounce bottle of dressing costs $1.56 a 14 ounce bottle costs $3.36 a 20 ounce bottle costs $5.60 which has the lowest cost per ounce

The mean average cost of standard room per night at a hostel is ? 20.60. therefore, how much does a standard room cost per night at night-time rest days?

The ratio of the height of two similar cylinders is 4 to 3 what is the ratio of their volumes