-9 < -x + 8 < 8 what’s the answer NEED HELP ASAP

Thelime contains the point(-3,0) and parallel x-3y=3( show all work)

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints

The perimeter of an equilateral triangle is 4 cm more than the perimeter of a square and the length of a side of the triangle is 8 cm more than the length of a side of the aware. find the length of a side of the equilateral triangle