Answer:
25%
Step-by-step explanation:
The tip percentage is 100 times the ratio of what you tipped to what you paid.
100 x (1 dollar tip) / (4 dollars paid) = 25%
Answer:
B
Step-by-step explanation:
Linear equation with one variable has the form of 
Since when you simplify you get 
7,3
there is two 7s and 3s that is adjacent to each other