picture unclear because it is to find the sum of consecutive numbers 1 to 100, you multiply the number of sets (50) by the sum of each set (101): 101(50)=5050.{\displaystyle 101(50)=5050.} So, the sum of consecutive number 1 through 100 is 5,050 .
The area of a rectangle is A=lw. Therefore, it can be represented here as: A=(4ab^2)(2ab).
Now, you can distribute.
4*2=8
a*a=a^2
b^2*b=b^3
The simplified expression is 8a^2b^3.
Hope this helps!!