I=$720, P=$1000, r=9%, t=? Find the amount of time. I=$119.88, P=?, r=3.6%, t=3 years. Find the Principal.

If u asnwer both ill give brainlist

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?