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?

42 + 2n ≤ 80, so n ≤ 19
42 + 2n ≥ 80, so n ≥ 19
42 + 2n ≥ 80, so n ≥ 36
42 + 2n ≤ 80, so n ≤ 36

Answer 1

@dan815

Answer 2

@horsegirl325

Answer 3

@confluxepic

Answer 4

@johnweldon1993

Answer 5

the third one

Answer 6

@surjithayer

Answer 7

Well, she wants to earn AT LEAST 80...so we wont settle for less so we need to have a \(\large \ge\) sign in our answer...so that gets rid of A and D right?

Answer 8

at least 80 means 80 or more
so \[42+2n \ge 80 \]
solve for n

Answer 9

Yes thats y i thought it was C

Answer 10

no
\[2n \ge 80-42,2n \ge 38,n \ge19\]

Answer 11

Oooooooooo ok it B

Answer 12

correct.

Answer 13

guys it is agianst openstuudy code of conduct to give out answers u must let them learn it