Answer:
Step-by-step explanation:
7)Fraction of apple pie after eaten by Jeremy = 1 - (1/3) = 2/3
Fraction of pie eaten by Sara

8)

Fraction left = 
Perimeter of any figure is all its sides summed up
for a rectangle, with two equal pairs, that means, length + length + width + width or 2length + 2width, or 2(length + width)
but we know the length is 7/5 the width
width = w
perimeter = P

and the length is 7/5 of that
Basically, it asks you to find the piece of data that is 1/10th of the overall shoe sales on a given day. As the number of shoes sold per day is 400, the piece of data you are looking for is 40. Meaning the answer is 'High heels sold on Friday'
Number 5 i dont know. i got 8.85×10^6, but its not one of the choices. number 6 i got A.12.57
Irregular Quadrilateral? I think?