I’m so done with math bro

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days

What is the domain of the given function? {(3,-2), (6, 1), (-1, 4), (5,9), (-4, 0); o {x | x= -4,-1, 3, 5, 6} o {yl y = -2,0, 1,4,9} o {x|x = -4,-2, -1,0, 1, 3, 4, 5, 6, 9} o y y = 4,-2, -1, 0, 1, 3, 4, 5, 6, 9}

Afamily went out to dinner and their bill was $113.if they want to leave a 19% tip, how much should they leave.