Deborah ran a 12-kilometer race. She completed the race in 1.6 hours. Deborah
speed for the first kilometer can be
represented by the function d 7.3h,
where d is distance in kilometers and his
time in hours. Was Deborah's average speed
for the first kilometer of the race faster or
slower than his average speed for the entire
race? Justify your answer.

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

In a column proof the right column states your reasons