Which statements are NOT true?

(a)
(b)
(c)
(d)

Y=4x^2+x-1 solve using quadratic formula

The weekly amount spent by a company for travel has an approximately normal distribution with mean = $550 and standard deviation = $40. a) what is the probability that the actual weekly expense will exceed $570 for more than 20 weeks during the next year? (note: one year = 52 weeks) b) what is the probability that actual weekly expenses exceed $580 for 10 or more, but 16 or fewer weeks during the next year?

Multiple similar transformation are performed on a triangle.which elements must be presented