Brian needs to mail cards and packages and wants to keep the mailing cost to no more than $500. The number of cards is at least 4 more than twice a number of packages. The cost of mailing a card (with pictures and closed) is $3 if a package that cost $7. a)write a system in a inequalities to model this situation. b) graph the system. c)can he email 60 cards and 26 packages? d)can he mailed 90 cards in 40 packages?​

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?

Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3