Final answer:
To find Renata and Isabella's ages, set Isabella's age as x and Renata's age as 6x + 3. By solving the equation x + 6x + 3 = 38, we find out that Isabella is 5 years old and Renata is 33 years old.
Step-by-step explanation:
To solve the problem, we can use algebra by setting up equations based on the information given:
- Let Isabella's age be x.
- Renata's age is then 3 + 6x.
- The sum of their ages equals 38: x + (3 + 6x) = 38.
- Simplify the equation: 7x + 3 = 38.
- Solve for x: 7x = 35, and so x = 5.
- Find Renata's age: 3 + 6(5) = 33.
Thus, Isabella is 5 years old and Renata is 33 years old.