Nails are shipped in large boxes that each contain 14 packs of nails there are 80 nails in one pack how many nails are in 3 large boxes

Ineed asap graph the system of equations 2x+y=5; 14+7y=35

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64