25 POINTS!! help as soon as possible, please! I am timed and need this answer to help me pass my math class! You began membership in a new health and fitness club that has access to a dietician and personal trainer. They help you develop a special eight-week diet and exercise program. The data in the following table represents your weight, w, as a function of time, t, over an eight-week period.

Time (weeks)

0

1

2

3

4

5

6

7

8

Weight (lb)

150

144

143

141

140

137

137

132

129

Using Delta notation, determine the average rate of change of weight over the last four weeks of the program. (include weeks 4 and 8 in your calculations)

There are two major tests of readiness for college: the act and the sat. act scores are reported on a scale from 1 to 36. the distribution of act scores in recent years has been roughly normal with mean µ = 20.9 and standard deviation s = 4.8. sat scores are reported on a scale from 400 to 1600. sat scores have been roughly normal with mean µ = 1026 and standard deviation s = 209. reports on a student's act or sat usually give the percentile as well as the actual score. the percentile is just the cumulative proportion stated as a percent: the percent of all scores that were lower than this one. tanya scores 1260 on the sat. what is her percentile (± 1)?