My friend needs help with pre-algebra?

Question

she said....

The town of Metropolis, Illinois, was founded in 1839. It is a small town located in the southern part of the state on the Ohio River. Metropolis has an approximate population of 6500.

1. In the first Superman comic book, Superman arrives in a town named Metropolis. This comic book appeared on shelves n years after the 1839 founding of Metropolis, Illinois. Write an algebraic expression to represent the year the first Superman comic appeared.

2. Metropolis was officially declared the hometown of Superman (n - 65) years after the first comic appeared. (This is the same n from #1.) Use your expression from part #1 to write a new algebraic expression representing the year that Metropolis was declared Superman's hometown. Simplify your expression by combining like terms.

3. Metropolis, Illinois, was declared Superman's hometown in 1972. Use this information and your expression from #2 to solve for n

Answer 1

1.

y = n + 1839

2.

s = y + n  - 65

= (n + 1839) + n - 65

= 2n + 1774

3.

1972 = 2n + 1774

198 = 2n

n = 99