Sayan is planning to go to a party in durham. if sayan is s minutes early for the party, he incurs cost 5s, and if he is s minutes late, then he incurs the cost 4s. suppose that the travel time from sayan’s home to the location of the party is a continuous random variable having probability density function f(x) = e −x , 0 < x < [infinity] (this is called the exponential distribution). determine the time at which you should depart if you want to minimize your expected cost

Which ordered pair is a solution of the equation? y + 5 = 2(2+1) choose 1 answer ® only (5,10 ® only (-1,-5) © both (5, 10) and (-1,-5) 0 neither

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.