Question 9.Stacy's lifelong dream is to meet Lady Gaga in person. After seeing her in concert, she is 100% certain this dream will come true, but
for every year that she does not see her live in concert, she is half as sure
that it will really happen. Come up with a function that describes the yearly
decay of Stacy's lifelong dream. Letr = the number of years that have
passed without her seeing Lady Gaga in concert and D = the percent of
certainty that her dream will come true.*
A.
D(t) = 100(1.5)
B.
D(t) = 100(.5)
C.
D(t) = {t 10
* 100
100
D.
D(t)
20
с C

Consider the line y = -3/-2 x +6. find the equation of the line that is perpendicular to this line and passes through the point (-9,-3). find the equation of the line that is parallel to this line and passes through the point (-9,-3).

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?