A mother gives birth to triplets. The individual weights of the babies at birth are 4 lb 2 oz, 4 lb 5 oz, and 3 lb 13 oz. Find the total birth weight of the triplets. Express the final answer in lbs and oz.

I'm terrible at math any here is appreciated.

Afruit stand has to decide what to charge for their produce. they need $10 for 4 apples and 4 oranges. they also need $15 for 6 apples and 6 oranges. we put this information into a system of linear equations. can we find a unique price for an apple and an orange?

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).