The sum of the digits of a two digit number is 11. if the digits are reversed, the new number will be 45 less than the original number. what is the original number

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?

With number 11 ( show how you got the answer)

What ia the sum if the first 7 terms of the geometric series