The sum of the digits of a certain two-digit number is 4 when you reverse its digits you increase the number by 18 find the number

The long jump record, in feet, at a particular school can be modeled by f(x) = 19.6 + 2.5ln(x + 1) where x is the number of years since records began to be kept at the school. what is the record for the long jump 11 years after record started being kept? round your answer to the nearest tenth.

7. the area of the playing surface at the olympic stadium in beijing isof a hectare. what area will it occupy on a plan drawn to a scaleof 1: 500?

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.