Answer:
dozen
Step-by-step explanation:
× 3 = 
× 2 = 

is equal to 
5 + 4 = 9 +
=
dozen
Answer
5 to the power of 7
Explanation
Multiply the length by the width. When multiplying numbers with exponents and similar bases, you can just add the exponents. If this doesn't make sense I'll show you.
The length is 5*5*5*5.
The width is 5*5*5.
Multiply this, and you get 5*5*5*5*5*5*5.
This is 5 times itself seven times.
The area of the rectangle is 5 to the power of 7.
Answer:
Yes
It is proportional because the line crosses both 1 and -1
All you have to do is plug in the number for x, and find y. I will write this out as if in that chart you have shown.
x y = 9 - 3x y
_______________________________________
0 y = 9 - 3(0) 9
1 y = 9 - 3(1) 6
2 y = 9 - 3(2) 3
3 y = 9 - 3(3) 0
Hope that helps!!