Help please it’s due in a couple of minutes

What is the sum of these mixed numbers 2 1/8 + 4 3/8

Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5

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%