Answer:10+4x
Explanation:
First you set aside the 10 and that is the start of your equation.
Then you add a plus to separate the ten from the rest of your equation.
Because each dog gets 4 treats, you set aside the 4 and then you substitute the 15 dogs with an X.
Now you have 10+4x
To get the total, simply solve the equation yourself by substituting the 15 back in.
10+4(15)=?
4(15)=60
60+10=70
So, 10+4(15)=70
Now, to generalize your equation simply take away the 15 and you end up with the solution
10+4x=70