Idon’t know how to find the sum or difference as a mixed number or fraction in simplest form

Find the slope of the line below . enter your answer as a fraction or decimal. use a slash mark ( / ) as the fraction bar if necessary

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Darian wants to build a regulation size pool table that is 9 feet in length.he plans he ordered are 18 by 36 inches. what is the scale factor of the dilation he must use to build a regulation pool table