Answer:
 ≥ 50 sets
Step-by-step explanation:
Mayerlin wants to know how many sets of 8 forks she needs to buy to increase her supply of forks from 223 to at least 623.
The number of additional forks will be the number of sets (s) times 8 forks each. Mayerlin wants at least 623.
 223 +8s ≥ 623 . . . . . . the inequality
Subtract 223:
 8s ≥ 400
 s ≥ 50 . . . . . . divide by 8
Mayerlin could by at least 50 sets of forks to have enough.