Answer:
12x + 2.5y ≤ 100 and x ≥ 4
Step-by-step explanation:
Given that $12 is the cost for each sheet of plywood.
Then x numbers of plywood sheet will cost $12x.
Again, each two-by-four costs $2.5.
Then y numbers of two-by-four will cost $2.5y.
Now, given that Roland must purchase at least 4 sheets of plywood.
If Roland can spend at most $100, then the inequality that is among the constrains for this situation is
12x + 2.5y ≤ 100 and x ≥ 4 (Answer)
