He bought 5 science books and 2 Math Books
5 Science Books = $300
2 Science Books = $100
7 Books = 400
Answer:
<em>The missing number in Sari's factorization is </em><em>3</em><em>.</em>
Step-by-step explanation:
The given polynomial is,

From quadratic equations, applying middle term factorization,



Comparing this to the given expression, the missing number in Sari's factorization is 3.
the formula for perimeter is l+l+w+w
So 9+9+6+6= 30 meters of fence