Answer:
x

Step-by-step explanation:
x = the number
3x + 8
4
3x
-4
x

It would be D. If you add all the numbers (-18, -81, 144) and divide it by 3 then you would get -81. I hope I helped!
Part A:
175x+2250=150x+2750
(Subtract 150x from both sides)
25x+2250=2750
(Subtract 2250 from both sides)
25x=500
(Divide by 25
x=20 months Part B: 175(20)+2250
3500+2250=5750
She would have to pay $5,750
Answer:
If we start with 6 and 8, we can break 6 up into 2*3 and 8 into 2*2*2, thus getting a prime factorization of 2*2*2*2*3, or 2^4 *3.
If we begin with 4 and 12, 4 breaks into 2*2 and 12 into 2*2*3, so the prime factorization of 48 is still 2^4 *3.
The starting factors do not matter, since the answer comes out to be the same. There is exactly one correct answer- it doesn't matter how it's found.
Hope this helps! :)