Melissa spent $41 total at the mall. she bought 6 books for $6 each, and spent the rest of her money on lunch. how much did she spend on lunch?

The seasonal output of a new experimental strain of pepper plants was carefully weighed. the mean weight per plant is 15.0 pounds, and the standard deviation of the normally distributed weights is 1.75 pounds. of the 200 plants in the experiment, how many produced peppers weighing between 13 and 16 pounds