Question

module 7 pretest: rational expressions and equations
module 7 pretest: rational expressions and equations
score: 0/9 answered: 0/9
question 1
identify the domain of the expression \\(\frac{12}{7x - 28}\\)
the domain is all real numbers, except
if there is more than one answer, write it as a list, using commas to separate your answers.

Explanation:

Step1: Determine when denominator is zero

For the rational expression $\frac{12}{7x - 28}$, the denominator cannot be zero. So set $7x - 28 = 0$.

Step2: Solve the equation

Solve $7x - 28 = 0$. Add 28 to both sides: $7x = 28$. Divide both sides by 7: $x = \frac{28}{7}=4$.

Answer:

4