A D
(7x+22)
(10x-5)
(4x +4)*
B
С
What must be the value of x to prove trapezoid ABCD is an isosceles trapezoid?
0 14
12
9

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?