Help I am kinda of confused by this problem so solve it and show your work please!

Answer:
You need to sell each week at least 15 subscriptions to earn at least
$40/week (15 subscriptions or more)
Step-by-step explanation:
s= subscriptions
2s+ 10 ≥40
2s ≥ 30
s ≥ 15
$2x15 =$30
$30+ $10 of salary = $40