The mapping diagram shows a relation. what is the domain of the relation? {x| x = –4 , 0, 1, 2}. {x| x = –7, –6, 2, 11, 3}. {y| y = –4, 0, 1, 2}. {y| y = –7, –6, 2, 11, 3}.

The solution x=1.25 represents the cost of snacks per day.

Step-by-step explanation:

We are given that

Hannah spends money  to buy lunch each day=$4.50

Hannah spends  total money on lunch and snacks each week=$28.75

The equation model the situation is given by

Total days in a week in which Hannah goes to school=5

According to given equation

Where 5 =Total days spend  by Hannah in school

$4.50=Cost of lunch per day

$28.75=Cost of lunch and snacks of five days

x=Cost of snacks per day

Therefore, x represents the cost of snacks bought by Hannah each day.