Answer:
The number is 7
Step-by-step explanation:
Let x be the unknown number
difference is subtraction and is means equals
3 ( x-2) = 15
Divide each side by 3
3/3(x-2) = 15/3
x-2 = 5
Add 2 to each side
x-2+2 = 5+2
x = 7
x=months
so erica: 200+75x
darrell: 350+50x
make them equal:
200+75x=350+50x
get x on one side.
125x=550
500/125=x
x=4.4
Answer: 25%
