1 through 7. Please help me

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )

Julie was able to walk 16 km through the zoo in 6 hours. how long will it take her to walk 24 km through the zoo?