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Use the table to answer the question.

($) Cost of Candy Bar A
Quantity ($) 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
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 determine which candy bar has the cheapest cost per bar, we need to calculate the cost per unit for both Candy Bar A and Candy Bar B.

For Candy Bar A, the cost per bar is calculated as follows:

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

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

For Candy Bar B, since the cost is represented by the equation y = x, the cost per bar is:

  • For x bars, the cost per bar is y/x = x/x = 1

This means the cost per bar for Candy Bar B is $1.00.

Now let's compare the two:

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

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

The answer is 2 for Candy Bar B.