Which represents the solution(s) of the system of equations, y = x2 - 4x – 21 and y = -5x – 22? Determine the solution set algebraically.

O (-1, -17)

O (1, -27)

O (-1, -17) and (1, -27)

O no solutions

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

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

Solve the inequality and graph 6j - 7 < 5