Keisha is investing her money in an ira. initially she will be putting in $775. using c as the additional amount invested each month, translate this problem into an algebraic expression that will show how much keisha invested for the entire year.

What are different types of statistical programs

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle. he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field

1) prove that 731^3−631^3 is divisible by 100 2) prove that 99^3−74^3 is divisible by 25