Answer: 8.4x^2 - 25.2x
Explanation:
To use the distributive property to multiply the linear expression 2.8x by (3x-9), we need to multiply 2.8x by both terms inside the parentheses separately.
Using the distributive property, we have:
2.8x * 3x - 2.8x * 9
Multiplying the first term, we get:
8.4x^2
Multiplying the second term, we get:
-25.2x
Therefore, when we multiply the linear expression 2.8x by (3x-9) using the distributive property, we obtain the simplified expression:
8.4x^2 - 25.2x