Select the correct answer. Which equation could be solved using this application of the quadratic formula?
-2 V22 – 4(1)(-4)
2(1)
=
O A.
x2 + 1 = 2x-3
OB.
x² – 2x-1=3
OC.
x² + 2x-1=3
OD D. x2 + 2x - 1 = -3

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 33 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30 ∘c on monday, but decreased at a constant rate in the next 33 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

The anwser cause i do not understand just plez

What is the remainder when 3x^2-x-10 is divided by x-1 -6,-7,-8, or -9