250-3m
m represents months
Not an equation but an expression since I don’t know the number of months he was on the diet.
we know that the multiplication comes first in the family then we start from left to right
4 x 5= 20
9-20 = -11
-11 + 6 = -5
there you go!
Answer:
I
Step-by-step explanation:
At least means greater than or equal to
a ≥ 10
That is a closed circle
We have a closed circle at 10
We have to be at least 10 years old
Closed circle at 10, line going to the right
Answer:

Step-by-step explanation:
I'm going to assume that your equation is 
So to evaluate it we need to simplify it. Find like terms and perform addition/subtraction on them.
