Item 17 there were nn signers of the declaration of independence. the oldest was benjamin franklin, who was yy years old. 7 is 10% of yy and nn is 80% of yy. how many signers were there?

7 is 10% of yy then we get the equation :
0.1*yy=7 so yy=7/0.1=70.
also, 
nn=0.8*yy.
 so nn=0.8*70=56. 
There were 56 signers then. 

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?

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