I WILL GIVE YOU A BRAINLIEST AND A THANK YOU! ALSO NO LINKS PLEASE!

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

the function makes a strait line horizontally with no x intercept but a y intercept at 9.

costs the what? what is the cost of the pants?

step-by-step explanation:

if it is $10, then the price is 14.

take 40% of the cost, and then add the cost.

40% of 10 = 4

4+10 = 14.