Which function is graphed below
Y=1/3(3)x
Y=3{1/3}^3
Y=(1/2)^x+2

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.

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%

The track team ran a mile and a quarter during their practice how many kilometers did her team runs?