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Use the table to answer the question.

Cost of Candy Bar A
($) Cost of Candy Bar A
Quantity ($) Cost
1 1.25
2 2.50
3 3.75
4 5.00
5 6.25
The cost of Candy Bar A is displayed in the table. The proportional relationship between the cost and quantity for Candy Bar B is represented by the equation y=x
. Which candy bar is the cheapest cost per bar? Enter 1 for Candy Bar A. Enter 2 for Candy Bar B.

(1 point)

1 answer

To find out which candy bar has the cheapest cost per bar, we can calculate the cost per bar for both Candy Bar A and Candy Bar B.

For Candy Bar A, we can determine the cost per bar based on the quantities provided:

  • For 1 bar: $1.25 / 1 = $1.25
  • For 2 bars: $2.50 / 2 = $1.25
  • For 3 bars: $3.75 / 3 = $1.25
  • For 4 bars: $5.00 / 4 = $1.25
  • For 5 bars: $6.25 / 5 = $1.25

The cost per bar for Candy Bar A is consistently $1.25.

For Candy Bar B, the equation given is \(y = x\). This means the cost in dollars is equal to the quantity of candy bars (i.e., for 1 bar, the cost is $1; for 2 bars, the cost is $2; for 3 bars, the cost is $3, and so on). Therefore, the cost per bar for Candy Bar B is:

  • For 1 bar: $1 / 1 = $1
  • For 2 bars: $2 / 2 = $1
  • For 3 bars: $3 / 3 = $1
  • For 4 bars: $4 / 4 = $1
  • For 5 bars: $5 / 5 = $1

The cost per bar for Candy Bar B is consistently $1.

Now let's compare the costs:

  • Candy Bar A: $1.25 per bar
  • Candy Bar B: $1.00 per bar

Since $1.00 is cheaper than $1.25, the cheapest cost per bar is for Candy Bar B.

The answer is 2 for Candy Bar B.