Ans: 150%, a percent of incease
Answer:
The domain is all real numbers
they are 11 years old
the number is 3
Step-by-step explanation:
seven times a number is equal to 12 more than 3 times the number
7*n = 12+3*n
7n=12+3n
subtract 3n from each side
7n-3n = 12+3n-3n
4n = 12
divide each side by 4
4n/4 = 12/4
n =3