Answer:

Step-by-step explanation:
The volume V of the fountain is equal to:
V = L*W*h
Where L is the lenght of the fountain, W is the width of the fountain and h is the high of the fountain
We already know that h is equal to x. On the other hand, if we cut a square with side of length x, L and W are calculated as:
L = 18 - 2x
W = 12 - 2x
So, replacing L, W and h on the equation of the volume, we get:
V = (18-2x)*(12-2x)*x
Finally, simplifying the function we get:


Answer:
b
Step-by-step explanation:
y is x + half of x so 12 + 6 is 18
2 because 2 + 8 = 10 and subtract 7 = 3
1=10
<span>2=20 </span>
<span>3=29 </span>
<span>4=37 </span>
<span>5=44 </span>
<span>6=50 </span>
<span>7=55 </span>
<span>8=59 </span>
<span>It would cost them $80 dollars to eat seperately so they saved $21.
</span>