Jamie just paid off a loan he took out six months ago at 12% simple annual interest. he paid $3,816.00, which was the sum of the principal and the simple interest accrued over the length of the loan. what was the amount of principal he borrowed? give answer in dollars rounded to the nearest cent. do not enter "$" sign in answer

The amount of principal Jamie borrowed was $3600.

Step-by-step explanation:

Let the principal of loan is = Po

Here r = 12% or 0.12

t = 6 months or 0.5 years

Now as given : Po+Interest=3816

So, Po=3600

Hence, the amount of principal Jamie borrowed was $3600.

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

it would rotate about 180 degrees.