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Evaluate the expression for $f = -1.4$ . $\newline$ Write your answer as a decimal or whole number. $\newline$ $-2 - 8f =$ _____

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Evaluate variable expressions involving rational numbers

Full solution

Q. Evaluate the expression for

f = -1.4

.

\newline

Write your answer as a decimal or whole number.

\newline

-2 - 8f =

_____

Identify Expression: Identify the expression to be evaluated. $\newline$ The given expression is $–2 − 8f$ . We need to substitute $f$ with $–1.4$ and simplify the expression.
Substitute $f$ : Substitute $f$ with $–1.4$ in the expression. $\newline$ The expression becomes $–2 − 8(–1.4)$ .
Multiply $8$ : Multiply $8$ by $-1.4$ . $\newline$ $8 \times -1.4 = -11.2$
Subtract from $-2$ : Subtract $–11.2$ from $–2$ . $–2 − (–11.2) = –2 + 11.2 = 9.2$

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