Crystal's sister Melanie is 3 years older than twice her age. Write an algebraic expression that represents the relationship of Melanie's age in therms of crystal's age, c.

M=3+2C

Step-by-step explanation:

Let M be Melanie's age

Let C be Crystal's age

Twice Crystal's age = 2C

3 years more than twice crystal's age = 3+2C

Therefore, the expression would be;

M=3 + 2C