Question

A supermarket display consists of boxes of cereal. The bottom row has 23 boxes. Each row has three fewer boxes than the row below it. The display has six 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.

Answer 1

Well, I don't know if the following work is exactly what you want but here it goes:

first:23
second: 23-3=20
third: 20-3=17
fourth:17-3=14
fifth: 14-3=11
sixth: 11-3=8

Hope thats what you wanted if not Ill do my best to figure out a different solution. Just comment or private message me For questions. :0

Answer 2

B(r)=23-3r+3

b(r)=26-3r

b(6)=26-3(6)

b(6)=8 boxes in the sixth row...

The sum of boxes will be the average of the top and bottom rows times the number of rows...

6(8+23)/2=93 boxes in total...