16. peter works part time for 3 hours every day and cindy works part time for 2 hours every day.
a. if both of them get $4.50 an hour, write an inequality to compare peter’s and cindy’s earnings.
b. what should cindy’s per-hour income be so that she earns at least $14 a day? write an inequality and an explanation of how to solve it.

Part A)

Part B)

Explanation:

1) The earnings are calculated multiplying the number of hours by the hourly rate.

2) The hourly rate of both Peter and Cindy is the same: $ 4.50 / hour

3) Let the variable used for computing the number of hours be h.

4) The number of hours Peter works every day is 3 hours, so, using the letter P to name Peter's earnings, the expression to calculate his earnings is:

5) Similarly, the expression to calculate Cindy's earnings would be:

Answering part A)

You have to write an inequality to compare Peter's and Cindy's earnings:

This is, the earnings of Peter are greater than the earnings of Cindy.

Part B),

You have to write an inequality to calculate Cindy's per-hour income so that she earns at least $ 14 a day.

Given: 2r ≥ 14

Divide both sides by 2: r ≥ 14 / 2

Simplify: r ≥ 7

That means that Cindy's per-hour income should be at least $7 and hour so that she earns $14 a day.

step-by-step explanation:

the options are kind of confusing. i can tell you what i see going on here when i look at the graph.

the class and exam medians are closely related, and it looks like the low outlier on the exam did pull the median lower. [tex][/tex]