Answer:
He has a total of 32 cones
Step-by-step explanation:
we can see that
the above curve is parabola
so, firstly , we can find vertex
vertex is (4,0)

now, we can use vertex formula of parabola

we can plug h and k
and we get

so, we can factor it as
............Answer
Answer:
81-25k²
Step-by-step explanation:
We need to write the expression for "The quantity 81 minus 5k, squared".
Square of any number x is given by x².
Square of 5k is given by : (5k)²= 5²×k²=25k²
Now subtract 25k² from 81.
It means we get : 81-25k². It is required expression.
The rate of change is 500.