Question

Which expression is equivalent to 1.1 n − 3.8 + 1.9 n + 9.1 ?

Answer 1

3n+5.3

Explanation:

(1.1×n+1.9n)+(−3.8+9.1) = 3n+5.3

Answer 2

Combine like terms by adding the 1.1n and 1.9n terms:

1.1n + 1.9n = 3n

Combine the constant terms:

-3.8 + 9.1 = 5.3

The expression becomes:

1.1n − 3.8 + 1.9n + 9.1 = 3n + 5.3

Therefore, the expression that is equivalent to 1.1n − 3.8 + 1.9n + 9.1 is 3n + 5.3.