mathematics
caira12:

Naomi works in a music shop and earns \$42 per day. She earns an extra \$2 for each CD she sells. If Naomi wants to earn at least \$80 per day, which inequality shows the minimum number of CDs, n, that she should sell? (5 points) Select one: a. 42 + 2n ≤ 80, so n ≤ 19 b. 42 + 2n ≥ 80, so n ≥ 19 c. 42 + 2n ≥ 80, so n ≥ 36 d. 42 + 2n ≤ 80, so n ≤ 36

8 months ago
Mercury:

"42 per day" that's a flat amount "2 per CD she sells" we can write this as 2*n so 42 + 2n has to be at least 80 which inequality best represents this situation?

8 months ago
caira12:

a

8 months ago
Mercury:

hm almost, "≤" means "less than or equal to" or "at most" so you have to reverse the direction of the inequality symbol

8 months ago
caira12:

ohh ok so b

8 months ago
Mercury:

good

8 months ago
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