7 + Y = X (x= His unknown age)
Answer:
24
Step-by-step explanation:
Answer: The answer is b
1 . Y= X^6-6X^3+5x
2. Y^6 + 4x^3 +5x
3. y= x^4-17x^2-72
4. y= x^3+21x^2+110
5. y= 3x^2+5