Nina likes to tip restaurant staff 18% when she enjoys the meal and has good service. which expression represents the amount of tip, in dollars, that nina will give when she has a positive experience eating a meal that cost n dollars?

For this case we are going to use the following variables:
 y = amount in $ of tip.
 x = amount in $ that Nina must pay to eat a meal.
 The mathematical expression will be
 y = 0.18x
 For example if Nina pays $ 100 for a meal, then the tip is:
 y = 0.18 * (100)
 y = 18 $
 
 An expression represents the amount of tip, in dollars, that Nina will give when she has a positive experience eating a meal that cost n dollars is:
 y = 0.18x

Your answer would be ahere is how: perimeter is how long all the sides are. in a rectangle, there are two sets of parallel sides. so, to find this, we would to the following.(15x2)+(4x2)30+838if you have questions ask! and mark me brainliest! i really wanna level up : 3

Dbc if u do the math and stuff that what i got let me know if i was wrong