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Rob is crocheting scarves for a craft fair. He will give away the first 2 scarves and will sell the rest for $8 each. His scarves are very popular and people always buy all that he is willing to sell. Rob’s goal is to earn at least $75. If n represents the number of scarves which Rob needs to crochet to meet his goal, which of the following inequalities best models the situation described below?

A. 8n - 2 ≥ 75

B. 8n ≥ 75 - 2

C. 8(n - 2) ≥ 75

D. (8 - 2)n ≥ 75

Answer :

Answer: 8(n-2) ≥ 75


n = number of scarves he needs to sell

1 scarf = $8
n scarves= 8n

He is giving away 2 free, this means that he made n scarves but sell (n - 2) scarves.
He wants to earn at least $75

8(n-2) ≥ 75

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Answer: 8(n-2) ≥ 75
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