Solve the inequality and enter you solution as an inequality comparing the variable to a number

Negative 5 1/12 + negative 4 1/4 + 6 3/4

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%

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1