You answered 21 out of 25 questions correctly on a test. did you reach your goal of getting at least 80%?

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

Anumber cube is rolled two times in a row. find the probability it will land on 2 on the first roll and a number greater then 4 on the second roll

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.