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A supermarket display consists of boxes of cereal. The bottom row has 73 boxes. Each row has eight fewer boxes than the row below it. The display has seven rows.
Write and use a function to determine how many boxes are in the top row. Show your work.
Use the appropriate formula to determine the number of boxes in the entire display. Show your work.
 

 Oct 10, 2022
 #1
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7th row==73 + ( - 8 * (7 - 1))

           ==73  + ( - 8 * 6)

           ==73  +  - 48

           ==25 - number of boxes in the top row.

 

Sum==7 / 2 * [2*73 + ( -8 * 6) ]

        == 3.5 * [146  +  ( - 48) ]

        == 3.5 * [ 98]

        == 343 - total number of boxes in the entire display

 Oct 10, 2022

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