Ryan must purchase new pillows and blankets for a donation drive to people in need. each new pillow costs $8 and each new blanket costs $25. ryan can spend at most $600, and he must purchase at least 20 blankets. let x represent the number of new pillows. let y represent the number of new blankets. which inequalities are among the constraints for this situation? select each correct answer. x≥20 x > 0 y≥20 25x+8y≤600 8x+25y≤600 x+y≥600