Determine the unit rate for 1 bag of chips if 5 bags cost $6.25; the proportional relationship is described by 5y=$6.25x .
To find the unit rate for 1 bag of chips, we need to determine the cost of 1 bag when 5 bags cost $6.25.
Using the equation 5y = $6.25x, we can substitute in x = 1 (for 1 bag) to find y:
5y = $6.25(1)
5y = $6.25
y = $6.25 / 5
y = $1.25
Therefore, the unit rate for 1 bag of chips is $1.25.