Select the expression equivalent to (2.1x+4.3)−(−3x−7). A −0.9x−2.7
B −0.9x+11.3
C 5.1x−2.7
D 5.1x+11.3

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 of the following represents the factorization of the trinomial below? x^2+7x-30

12 3 4 5 6 7 8 9 10time remaining01: 24: 54which graph represents this system? y=1/2x + 3 y= 3/2x -1