Select the correct answer. Which expression represents a quadratic expression in complete factored form?
А.(2x + 4)(x+3)
B. (x - 2) + (x + 3)
C. (x + 4)(x – 3)
D. (x - 1)(3x – 9)

Pls me this is due today and i need i will make brainliest if you me answer correctly and i will report if you try to give me a dumb answer.

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle