Let
x-------> the first number
y------> the second number
we know that


equation 

equation 
substitute equation 1 in equation 2

using a graph tool-----> to resolve the second order equation
see the attached figure
the solution is

Your final answer is going to be 4r + 3r ^2 +7
Ten-trillion seven billion
Answer:
C
Step-by-step explanation:hope this helps have a great day =D