Help me please what is the answer for this If 1 kilometre is equal to 2.2 liters. Then how many liters are in 7 kilometres

According to statistics a person will devote 32 years to sleeping and watching tv. the number of years sleeping will exceed the number of years watching tv by 18. over a lifetime, how many years will the person spend on each of these activities

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

The graph shows the charges for a health club in a month. make a function table for the input-output values. writes an equation that can be used to find the total charge y for the number of x classes