Question

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

Answer 1

"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?

Answer 2

a

Answer 3

hm almost, "≤" means "less than or equal to" or "at most"

so you have to reverse the direction of the inequality symbol

Answer 4

ohh ok so b

Answer 5

good