What is a simpler form of the expression? (2n 2 + 5n + 3)(4n – 5) a. 8n 3 + 10n 2 – 13n – 15 b. 8n 3 + 30n 2 – 37n – 15 c. 8n 3 – 10n 2 + 37n – 15 d. 8n 3 + 13n 2 – 10n – 15

Standard deviation of 19,29,21,22,23

Aaron invested a total of $4,100, some in an account earning 8% simple interest, and the rest in an account earning 5% simple interest. how much did he invest in each account if after one year he earned $211 in interest? select one: a. $200 at 8%, $3,900 at 5% b. $3,200 at 8%, $900 at 5% c. $900 at 8%, $3,200 at 5% d. $3,900 at 8%, $200 at 5%

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?