Question

question
which expression is equivalent to 0.63 − 0.15u + u?

answer
−0.52u 0.85u + 0.63
1.48u 0.48 + u

Explanation:

Step1: Combine like terms

The expression is \(0.63 - 0.15u + u\). The like terms are \(-0.15u\) and \(u\). We know that \(u = 1u\), so we add the coefficients of \(u\): \(-0.15 + 1 = 0.85\). So the \(u\)-terms combine to \(0.85u\).

Step2: Rewrite the expression

After combining the like terms, the expression becomes \(0.85u + 0.63\) (since the constant term \(0.63\) remains as it is and we add the combined \(u\)-term).

Answer:

\(0.85u + 0.63\) (the option with this expression)