Answer:
Write the problem as a mathematical expression.
y=−x²+18x−72
Rewrite the equation in vertex form.
y=−(x−9)²+9
Use the vertex form, y=a(x−h)2+k , to determine the values of a, h, and k.
a=−1
h=9
k=9
Find the vertex (h,k).
(9,9)
Good Luck !
Step-by-step explanation:
Answer:
<em>$4.84</em>
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Step-by-step explanation:
Given that
For delivery within mi, charges = $1.25
For delivery within mi -
mi, charges = $1.70
For delivery within mi - 2 mi, charges = $2.15
and
so on.
i.e.
For delivery within 2 mi - 2 mi, charges = $2.60
For delivery within 2 mi - 2
mi, charges = $3.05
For delivery within 2 mi - 2
mi, charges = $3.50
For delivery within 2 mi - 3 mi, charges = $3.95
For delivery within 3 mi - 3 mi, charges = $4.40
So, every 0.25 mi or mi increase in distance, there is an increase of $0.45 in the charges.
It is given that there is increase of 10% in the rates.
i.e. for every 0.25 mi increase in distance, there is an increase of 0.45*1.10 = $0.495 in the charges.
The distance of miles lies within the range 3 mi - 3
mi.
So actual charges after increase of 10%