The function f(x) = –x2 – 4x + 5 is shown on the graph.

on a coordinate plane, a parabola opens down. it goes through (negative 5, 0), has a vertex at (negative 2, 9), and goes through (1, 0).
which statement about the function is true?

the domain of the function is all real numbers less than or equal to −2.
the domain of the function is all real numbers less than or equal to 9.
the range of the function is all real numbers less than or equal to −2.
the range of the function is all real n

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?

In a test for esp (extrasensory perception), the experimenter looks at cards that are hidden from the subject. each card contains either a star, a circle, a wave, a cross or a square.(five shapes) as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. when the esp study described above discovers a subject whose performance appears to be better than guessing, the study continues at greater length. the experimenter looks at many cards bearing one of five shapes (star, square, circle, wave, and cross) in an order determined by random numbers. the subject cannot see the experimenter as he looks at each card in turn, in order to avoid any possible nonverbal clues. the answers of a subject who does not have esp should be independent observations, each with probability 1/5 of success. we record 1000 attempts. which of the following assumptions must be met in order to solve this problem? it's reasonable to assume normality 0.8(1000), 0.2(1000)%30 approximately normal 0.8(1000), 0.2(1000)% 10 approximately normal srs it is reasonable to assume the total number of cards is over 10,000 it is reasonable to assume the total number of cards is over 1000

Find the distance between the pair of points a(-1,8) and b(-8,4)