Determine the 57th term of the sequence 672,660,

It appears the sequence is arithmetic because it has a common difference, d, of -12.

Formula for any term in an arithmetic sequence is 
n = 57, , d = -12

Substitute values into formula:

45x is the correct answer

The distance from point a to point c across the coordinate plane is aproxamatly 8.94 rounded to the nearest hundredth. you use a^2 + b^2 =c^2