Ivan pays $2 a month for long distance calls plus 12 cents per minute. Last month Ivan's long distance bill was $15.68. For how many minutes was Ivan billed

130.67 minutes

Step-by-step explanation:

Ivan pays $2 a month for long distance calls plus 12 cents per minute.

100 cents = 1 dollar

12 cents = 12/100 = $0.12

12 cents = $0.12 = 1 minute

$15.68 = 15.68/0.12 = 130.67 minutes

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.