domain refers to the X values so option A would be correct :)
Day: Monday, Tuesday, Wednesday, Thursday, Friday
frequency: 3, 1, 1, 1, 5
Frequency is the repeated number of times so you just need to count how many times a day repeats.
Answer: If my calculations are correct, it'd be 160% percent decrease
Step-by-step explanation:
you subtract 640 and 480, 640%-480%= 160%
15x.25=3.75
15-3.75=11.25.
The answer is $11.25