Sarah has built a scale model of a bridge. The real bridge is 56 ft across and 21 ft wide. sarahs model is 8 in. Across and 2.5 in wide. Is Sarah’s model a true model of the bridge? Explain

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?