He has to be 5 since 5×3=15 and each year he turns one year older so yea
To simplify this expression you would factor out the greatest common factor which is y^2.
9y^2 - 11xy^2 -----> Factor out y^2
y^2(9 - 11x) ----> This should be as far as you can go, meaning this is your final answer!
Hope this helps!
approximately 2/3 of all students are not wearing braces because 165 (the difference of 250-85) /250 is 0.66
Answer:

Step-by-step explanation:
I will upload an image with all of my work.
I will also upload a graph which shows that both expressions are equal.
Step-by-step explanation:
-3x - 10 > 14
-3x > 24 (add 10 to both sides)
x < -8 (divide by -3, flip inequality sign)
The missing step is -3x > 24.