The Income-tax for the state of Kalamazoo is as follows: An annual salary up to and including $45,000 is charged an income tax of 2%. From $45,000 - $80,000 is charged 2% for the first $45,000 and 3% for the salary over $45,000. For salaries above $80,000 it is 2% for the first $45,000, 3% for $45,000-80,000 plus 4% for anything over $80,000.
Write a piecewise function representing this situation:

Which situation can be modeled by the inequality 5 + 10w ≥ 45? a. you start with $5 and save $10 a week until you have at least $45. b.you start with 5 baseball cards and purchase 10 cards every week until you have at most 45 cards. c.you start with 5 water bottles and purchases cases of 10 water bottles each until you have a total of 45 water bottles. d.you spend $5 plus $10 per week until you have less than $45.