I need help please!
Ap calculus

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

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

Write a corresponding real world problem to represent 2x - 125=400