Find the coordinates of the vertices of each figure after the given transformation.
Rotation 180° about the origin
D(2, -1), C(1, 3), B(4, -1)
O D'(-1, 2), C'(3, 1), B'(-1, 4)
O D'(-2, -1), C'(-1, 3), B'(-4, -1)
O D'(1.-2), C'(-3,01), B'(-1,-4)
O D'(-2, 1), C'(-1, -3), B'(-4, 1)

Apatient is given 50 mg dose of medicine the medicines effectiveness decreases every hour at a constant rate of 40% what is the exponential decay function that models this scenario how much medicine will be left in the patients system after 2 hours

Ricky takes out a $31,800 student loan to pay his expenses while he is in college. after graduation, he will begin making payments of $190.66 per month for the next 30 years to pay off the loan. how much more will ricky end up paying for the loan than the original value of $31,800? ricky will end up paying $ more than he borrowed to pay off the loan.

4. a single woman uses an online cash flow calculator which reveals a cash flow of 203. what does this mean?