Answer:
d
Step-by-step explanation:
Its 2,4 as the correct answer
#8 is 195
#9 is $520
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Step 1
Given;

Required; To find the center that eliminates the linear terms
Step 2



Step 3
Substitute a,d,e into the vertex form


Step 4
Completing the square for -y²+4y



Step 5
Substitute a,d,e into the vertex form

Step 6

Step 7

Hence the answer is (-3,2)
51 is the interquartile range for the set of data hope this helps;)