Which statements about the graph of the function f(x) = –x2 – 4x 2 are true? Select three options. The domain is {x|x ≤ –2}. The range is {y|y ≤ 6}. The function is increasing over the interval (–[infinity] , –2). The function is decreasing over the interval (−4, [infinity]). The function has a positive y-intercept.

Which of the following attitudes is not likely to lead to unsafe decisions? a. anxiety b. composure c. overconfidence

Which scenario describes intraspecific, indirect competition? a. a peacock defends its territory against another peacock. b. lions and hyenas compete for the same prey animals. c. a male black bear eats fish in an area of a lake, so other black bears can’t. d. different species of birds fight over spilled popcorn on the ground.

Need will give 100 ! in no less than one hundred fifty words, explain why it is important for engineers to sketch designs and use them to clarify their designs to other people, giving at least three reasons.