Final answer:
Jami needs to set her treadmill to 10 miles per hour to achieve her goal of running a mile in 6 minutes. The price of grapes is converted from $1.44 per pound to approximately $3.20 per kilogram after performing the necessary conversion using the given weight ratio of pounds to kilograms.
Step-by-step explanation:
To calculate the speed in miles per hour that Jami needs to set on her treadmill to run a mile in 6 minutes, we use the following conversion: since there are 60 minutes in an hour, we divide 60 by 6 to find the speed per hour. Therefore, 60 min / 6 min = 10 miles per hour. To convert the price of grapes from dollars per pound to dollars per kilogram, we need to know that there are approximately 0.45 kilograms in a pound. Since the price is $1.44 per pound, we take 1 pound / $1.44 and multiply this by the reciprocal of the kilograms per pound (1 / 0.45 kg). So, $1.44 / 0.45 kg = $3.20/kg. This means that the price per kilogram of grapes is $3.20 after rounding to the nearest cent.