Betty always leaves a 20% Tip at restaurants. She can calculate it in two steps by adding the 20 % of the Original Cost to the Original Cost. If T = Tip and c = Cost she can do this using the formula T = c + 0.20c. She would rather use a formula that does this in one step.

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?

How many shares did he have to begin with?