The sum of -7 times a number and 8 times the sum of the number and 1 is the number minus 7

The perimeter of a rectangle is greater than or equal to 74 meters. if the length is 25 meters, the minimum width of the rectangle is meters.

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me

Which equation could represent the relationship shown in the scatter plot? y=−3x−2 y=−3/4x+10 y=−2/3x+1 y=9x−12 scatter plot with x axis labeled variable x and y axis labeled variable y. points go from upper left to lower right.