Peter charges $5 an hour for babysitting. So far, he has earned
$75. How many more hours does he
need to babysit in order to earn a
total of $180?

21 more hours

Step-by-step explanation:

Divide $75 by $5 to know how many hours he worked for. 75/5 is 15. So he worked for 15 hours so far.

Then find out how many hours will make $180. 180/5 = 36 hours. He needs to work 36 hours to earn $180 but he already worked 15. So, find the amount left. 36 - 15 is 21 hours.

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950

3/20

step-by-step explanation:

well, there are 20 outcomes, and 3 of them you want. so, 3/20