Can someone be amazing and me solve number 2?

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

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.

True or false look at the picture pls : /