What is the difference between 2 proportion z test and a 1 proportion z test

A(t)=728(1+0.04)^t how much money did aditya originally invest

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.

Which of these triangle pairs can be mapped to each other using a single translation? cof hn