Answer:
The solution is

Step-by-step explanation:
The given equations are

and

The graph of the two equations intersects at
as show in the graph in the attachment.
The point of intersection of the two graphs is the solution to system of equations.
Hence the solution is

The answer is x(x+7)=169 because the formula for a right triangle is a^2+b^2=c^2. With that said 13 squared as the hypotenuse is 169. since ether is one side that has to be 7 feet longer than the other side that means you add 7 to the unknown length, x. Then you still have to add x into the equation considering it is still aprat of the problem. HOPE THIS HELPS!!!
A 750,000,000
780,000,000
793,000,000
793,000,000
Or
D 750,000,000
780,000,000