PLEASE HELP ME I NEED SOMEONE
A normal distribution has a mean of 67 with a standard deviation of 8. Find the probability that a randomly selected-value is at least 75?

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

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!