Which of the following will increase the gravitational force exerted by one object on another? Plz respond right away this is a test plzz

Solve the system of equations. y= 2x y= x^2 - 15

David must install fencing around a lot that is shaped like a right angle.the side of lot that runs east-west is 200 ft long.the side of the lot runs north-south is 125 ft long.calculate how many feet of fencing he will need to surround the entire lot.

The ratio of the perimeters of two similar triangles is 4: 3. what are the areas of these triangles if the sum of their areas is 130cm2?