An observation point was originally in line with the top of a waterfall, but the waterfall moves a constant
distance each year from erosion. The following graph shows the relationship between the time since 1998 and
the distance the top of the waterfall is from the observation point. Negative years represent time before 1998.
Distance from
observation point (m)
-10
15
-5 5 10
Years since 1998
What feature of the graph represents the distance from the observation point in 2003?

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

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 scatterplot represents the total fee for hours renting a bike. the line of best fit for the data is y = 6.855x + 10.215. which table shows the correct residual values for the data set?