Prove that: 6^7-6^6+6^5 is divisible by 31
15 points!!!

A80-foot piece of siding is cut into three pieces so that the second piece is four times four times as long as the first piece and the third piece is five times as long as the first piece. if x represents the length of the first piece, find the lengths of all three pieces.

Draw a graph y=f(x) that matches the following characteristics. increasing on: -8< x< -4 and-1< x< 5. decreasing on : -4< x< -1. f(-8)=-5 and zeros at x=-6,-2,and 3. absolute maximum of 7 and absolute minimum of -5.

Kelly walks 0.7 mile to school. mary walks 0.49 mile to school. write an inequality using < ,> , or = to compare the distances they walk to school.