There are 3 black marbles and 4 red marbles in a bag what is the probability or picking two black marbles

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

When only separate discreet points are graphed it is called?

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).