Question

translate this sentence into an equation.
chau’s score decreased by 9 is 68.
use the variable c to represent chau’s score.

Explanation:

Step1: Define variable for score

Let $c$ = Chau's score.

Step2: Translate "decreased by 9"

This means subtract 9 from $c$: $c - 9$.

Step3: Set equal to 68

The result equals 68, so form the equation.

Answer:

$c - 9 = 68$