Answer:
option b
Step-by-step explanation:




x = -3 (Not possible)
x = 5
So, x = 5
2 gallons were left at the end of the day
Step-by-step explanation:
So for this question just substitute the value and work out. I thought it it to the power of 2 as I can't tell from the question.
Answer:
14
Step-by-step explanation:
- Find the square root of 196:
I hope this helps!
The rules are necessary, so that there is agreement as to how to evaluate an expression. By having rules, and having everyone follow the rules, an expression can have only one single correct value. If there are no rules, then different people will interpret the expression differently, and will get different values for its evaluation.