More = Addition
"Twice a Number" = Multiplication (specifically by two)

Since the order of operations tell us to multiply before we add, we can simplify

.
Answer:
C. 4V²
Step-by-step explanation:
Like terms are those whose variables are same.
Both 2v² and 4v² have v² in it.
Answer:
10 years old
Step-by-step explanation:
Let's say the age of the younger sister is x. Then the age of the older sister must be x + 2 because the ages are consecutive <em>even</em> numbers.
"Twice the age of the youngest exceeds the oldest by 8" means that we multiply x by 2 and set that equal to (x + 2) + 8:
2x = (x + 2) + 8
2x = x + 10
x = 10
So, the youngest sister is 10 years old.
27 miles per hour
1 hour = 60 minutes
27 miles per 60 minutes
27/60 miles per 1 minute
9/20 miles per minute