Which function is represented by the graph? f(x) =
X - 3, X < 0
3, x > 0
x + 3, X 3,
X > 0
f(x) = {
f(x) = {
f(x) = {
- x + 3, X50
3,
X > o
-X – 3, X50
3.
x > 0

Ican figure out 20 shares multiply by $117.98 =2359.6920 shares multiply by $124.32=2486.40then take 40 shares multiply by $128.48=5139.20after that i'm lost any be greatly appreciated.

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.