Robyn recorded her distance (d) for different lengths of time (t) she ran. Time (min) 20 40 60 30
Distance (km) 2 4 6 3
Which equation represents the relationship between t and d?
O A d= to:
O B. d = 10
OC. 20t = 20
OD. 1x d = 40

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?