Answer:
[tex]y = x + \$622.7\ billion[/tex]
Step-by-step explanation:
To start with;
Represent the budget of education by x
Represent the budget of defense by y
From the question, we understand that:
y exceeds x by $622.7 billion
Mathematically. this can be represented as:
[tex]y = x + \$622.7\ billion[/tex]
Hence, the defense budget is x + $622.7 billion