D is the one that is decreasing
Use Subtraction
1. Subtract
x+2y=7
3x-2y=-3
-------------
4x+0y=4 SIMPLIFY 4x=4
2. DIVIDE
4x=4
x=1
Substitute that into either of the original equations to get x=1, y=3
Answer:
Step-by-step explanation:
Polynomial
is in standard form as it is written in descending order of their powers.
the answer is 1.875 pounds