Easy 6th Grade Math. Help me out for 100 points <3

Anyone know? will mark brainliest if correct

43lbs of tomatos cost $387. how much would 41lbs cost

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%