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Linear Relationships, SM-Bank 018 MC

Jennifer had 20 cupcakes for sale at the beginning of the day. The table shows the number of cupcakes at the beginning of each hour.

Hour 0 1 2 3
Cupcakes 20 16 12 8

 
The table also shows a pattern in the number of cupcakes sold. The correct pattern connecting the hour and the number of cupcakes is: 

  1. \(20-\text{Hour}\times 1\)
  2. \(20-\text{Hour}\times 4\)
  3. \(20+\text{Hour}\times 2\)
  4. \(19+\text{Hour}\)
Show Answers Only

\(B\)

Show Worked Solution

\(\text{Consider Option B }:\ 20-\text{Hour}\times 4\)

\(\text{Hour 0}\longrightarrow\) \(20-4\times 0=20\) \(\checkmark\)
\(\text{Hour 1}\longrightarrow\) \(20-4\times 1=16\) \(\checkmark\)
\(\text{Hour 2}\longrightarrow\) \(20-4\times 2=12\) \(\checkmark\)
\(\text{Hour 3}\longrightarrow\) \(20-4\times 3=8\) \(\checkmark\)

 
\(\Rightarrow B\)