Answer:
first one is 5 7/8
second one is 6 1/3
third is
Step-by-step explanation: see the pictures
Answer:
The product of given matrix is 
Step-by-step explanation:
Given : Two matrix

and 
We have to find the product of given matrix

Multiply the rows of first matrix by the columns of second matrix , we have,




On , simplifying , we get,

Thus, the product of given matrix is 
Assuming the question marks are minus signs
to find max, take derivitive and test 0's and endpoints
take derivitive
f'(x)=18x²-18x-108
it equal 0 at x=-2 and 3
if we make a sign chart to find the change of signs
the sign changes from (+) to (-) at x=-2 and from (-) to (+) at x=3
so a reletive max at x=-2 and a reletive min at x=3
test entpoints
f(-3)=83
f(-2)=134
f(3)=-241
f(4)=-190
the min is at x=3 and max is at x=-2
Yes it is a function because non of the X values are repeating