Five less than the product of 6 and a number equals 7

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

What is the distance between point a and b

Someone me what is the area of this figure? 18m 18m 8m 16m