Julia wrote 20 letters each month for y months in a row. Write an expression to show how many total letters Julia wrote.
1 answer:
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The cube of 20 can be written as 
. Split the 20 up into 2*10. Even though we are doing the cube of this value, first do 
and then do 
. Now multiply these numbers together so it is 8*1000=8000. Which is answer choice D. 8000
Set it up.
Make the equations equal to 180° because they are on a straight line. And a straight line adds up to 180°
