Questions: Given f(x) = 5x - 3, solve for x when f(x) = 7.
Transcript text: Given $f(x)=5 x-3$, solve for $x$ when $f(x)=7$.
Solution
Solution Steps
Step 1: Substitute the given value into the function
We are given the function \( f(x) = 5x - 3 \) and asked to solve for \( x \) when \( f(x) = 7 \). Substitute \( f(x) = 7 \) into the equation:
\[
7 = 5x - 3
\]
Step 2: Solve for \( x \)
Add 3 to both sides of the equation to isolate the term with \( x \):
\[
7 + 3 = 5x
\]
\[
10 = 5x
\]
Now, divide both sides by 5 to solve for \( x \):
\[
x = \frac{10}{5}
\]
\[
x = 2
\]