Nicolas is going trekking with four of his friends. They decided to split up
their trekking gear so that the weight of the gear would be shared equally.
When Nicolas's backpack was empty, it weighed 2-1 kilograms. After
Nicolas's bag was packed, it weighed 43 kilograms. What was the total
weight of the group's trekking gear?

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart

answer: the answer is e

step-by-step explanation: