Question

Which of the following is not a way to represent the solution of the inequality 7 − 9x − (x + 12) less than or equal to 25?
x greater than or equal to −3
x less than or equal to −3
−3 less than or equal to x
A number line with a closed circle on negative 3 and shading to the right

Answer 1

Hello @asmith721 and sorry for the late reply :-/

in order to figure out which of them is NOT a way, we should first figure out what Are some ways to represent the given function? :)

so we are given
\(7-9x-(x+12)\le25\)
we should first simplify this all down...

(distributing the negative)
\(7-9x - x - 12 \le 25 \)

(adding like terms)
(-9x - x = -10x)
(7 - 12 = -5)
\(-10x - 5 \le 25 \)

(adding 5 to both sides)
\(-10x \le 30\)

(dividing both sides by -10)
(but remember when you multiply or divide by a negative number, you should flip the sign)
\(x \ge -3\)


hopefully this would be enough to get you to your answer :)
if you still need help, feel free to tag me with @jigglypuff314 ^_^