A box contains four blue balls and six red balls. if a ball is selected at random, what is the probability of selecting a blue ball?

Explain why the function is discontinuous at the given number a. (select all that apply.) f(x) = 1 x + 1 a = −1 f(−1) is undefined. lim x→−1+ f(x) and lim x→−1− f(x) exist, but are not equal. lim x→−1 f(x) does not exist. f(−1) and lim x→−1 f(x) exist, but are not equal. none of the above

Which is the completely factored from of xy^3-x^3y

A. what does the point (4, 122) represent? b. what is the unit rate? c. what is the cost of buying 10 tickets?