PLS PLS someone help asap Calculate the Standard Deviation of the following set of data.

In which form is the following function written? y = - 2(x – 3)(x + 5)

Which values of p and q result in an equation with exactly one solution? px-43=-42x+q choose all answers that apply: a) p=-43 and q=-43 b) p=42 and q=43 c) p=43 and q=−42 d) p=42 and q=42

Find the distance between (0,5) & (-4,2)