William says that 15 years from now, his age will be 3 times his age 5 years ago. If x represents William’s present age, complete the following sentences. 15 years
18 years
x − 15 = 3(x + 5)
x + 15 = 3(x − 5)

X+15 = 3(x-5)
+15 because 15 from now
-5 because 5 years ago

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?