Apack of paper costs $3.75 including tax. mr. cooper wants to purchase packs of paper for his class and has a $20 budget. write an inequality to solve for the number of packs of paper mr. cooper can purchase with his budget. a) $3.75x ≥ $20. b) $3.75x ≤ $20. c) $20x ≤ $3.75. d) $20x ≥ $3.75