Answer:
the first bullet, M+0.15m
Step-by-step explanation:
Think about it this way:
M is the total amount of money you pay for the meal.
0.15m is the tax calculation, 0.15 x M= a 15% tip
Because a tip means added money on top of the total cost of the meal, you have to add both of them together.
I’m not sure if this is what your looking for but x = -49
The answer is 13 you subtract 25 and 12