Carl is boarding a plane. He has 2 checked bags of equal weight and a backpack that weighs 4 kg The total weight of Carl's baggage is 35 kgt. Write an equation to determine the weight, www, of each of Carl's checked bags. Find the weight of each of his checked bags.

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?