Which of the following equations represents a quadratic function? Select one:
A. x(3x^2−x)=4x^2
B. x^3−x^2−x−1=0
C. −6x−5=−8x^2
D. 8−9(x−1)=3x

An episode of a television show is 60 minutes long when it originally airs with commercials. on a dvd without commercials, the episode is only 417 minutes long. how many1-minute commercials did the episode include when it originally aired? write and solve an equation to justify your answer.

Calculate the density of benzene if 300ml of it weighs 263g. a. 0.88 g/ml b. 1.14 g/ml c. 78,900 g/ml d. 37 g/ml

Find 1/8 of 12. express your answer in simplest form.