Michelle is 7 years older than her sister Joan, and Joan is 3 years younger than their brother Ryan. If the sum of their ages is 64, how old is Joan? 16
22
18
19

(C) 18

Step-by-step explanation:

We can create a systems of equations. Assuming is Michelle's age, is Joan's age, and is Ryan's age, the equations are:

We can use substitution, since we know the "values" of m and j.

So we know that Joan is 18 years old.

Hope this helped!

the answer is c.

for continuous functions, they continue in the same pattern and you have to find that pattern kinda like slope

no

step-by-step explanation:

answer