Juanita wrote 3 X 47 as 3 X 40 + 3 X 7. What property did she use to rewrite the expression?

Answer: Distributive property
Step-by-step explanation:
Since [tex]47=40+7[/tex]
Thus, the product [tex]3\times47[/tex] is equivalent to
[tex]3\times(40+7)[/tex]
The distributive property says that multiply a sum by multiplying each addend separately and then add the products.
Thus, by this property above product can be written as:
[tex]3\times40+3\times7\\[/tex]
Hence, Juanita used distributive property to rewrite the expression.