Tyler orders a meal that costs $15. Tyler also wants to leave a tip for the server. How much do you think he should pay in all? Explain your reasoning.

So I think this isn’t like a problem that I could get wrong but my brain is literally off.

So please help lol
If you answer this one god bless you!!!

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

Triangle xyz, with vertices x(-2, 0), y(-2, -1), and z(-5, -2), undergoes a transformation to form triangle x? y? z? , with vertices x? (4, -2), y? (4, -3), and z? (1, -4). the type of transformation that triangle xyz undergoes is a . triangle x? y? z? then undergoes a transformation to form triangle x? y? z? , with vertices x? (4, 2), y? (4, 3), and z? (1, 4). the type of transformation that triangle x? y? z? undergoes is a .