Khfihpidhipjgrpijgpjeipgjepjgrrh
Answer:
3 months
Step-by-step explanation:
there are 12 months in a year.
.25 is equal to a quarter of a year
12/4=3
The main numbers and ratios or rates depending on the problem
Check the picture below.
now, since we know what "f" is, let us use the CNT triangle with the small COR one.

3 (x+7)
multiply 3 to both x and 7
3x+21