When Caroline runs the 400 meter dash, her finishing times are normally distributed with a mean of 68 seconds and a standard deviation of 1.5 seconds. Using the
empirical rule, determine the interval of times that represents the middle 99.7% of
her finishing times in the 400 meter race.

true? is that what you're asking or do you mean something else?

i believe it is c.y = 9x

rise over run. 9 units up over 1 unit right or 9/1

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.