We are given
The average income, I, in dollars is

(a)
now, we are given
average income is $275000
so, 
now, we can set them equal
and then we can solve for x


we will have to use quadratic formula


we get


we need to find youngest age
It means that we need to choose smallest value
so,
............Answer
(b)
we are given
x=40
so, we can plug it and find I

..............Answer
The answer is B because if 0 is < y than 8 would be equal to x
It depends on how big the fish tank is. I need the image
Put the decimal over 100 and get rid of the decimal
Answer:
90 but since its a triangle but im
pretty sure you have to divide by 2 so 45 i think