HURRY! Hal makes an error when determining the difference quotient of f(x) = x2 + 11x + 2.

His work is shown.
(see picture)

Which statement describes the error?
A. He did not expand (x + h)^2 correctly.
B. He did not combine like terms correctly.
C. He should have subtracted f(x) – f(x + h), not
f(x + h) – f(x).
D. He should have added f(x + h) + f(x), not subtracted
f(x + h) – f(x).

Find the area of a square with a side length of 1/4 in.

Read the excerpt from the strange case of dr jekyll and mr. hyde what do dr. jekyll's thoughts reveal about him in this excerpt? [t]he inmates of my house were locked in the most rigorous hours of slumber, and i determined, flushed as i was with hope and triumph, to venture in my new shape as far as to my bedroom. i crossed the yard, wherein the constellations looked down upon me, i could have thought, with wonder, the first creature of that sort that their unsleeping vigilance had yet disclosed to he is jealous of those who can sleep through the night. he is revered for his scientific advances. he is interested in studying the movements of the stars he is proud and enthusiastic about his initial results.

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function. a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.