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# Percent Increase and Decrease, Slope, Y-intercept, Trends

1. Evaluate the following:

e = &#61629;-2.7&#61629;= 40 =

LN 2 = (1.01)365 =
(-8)2/3 = 5-3/2+1 =

2. A stock price went down by 10%, and subsequently went up by 10%. If the final price was \$20, what was the original price? (Please show your thinking here.)

3. In a particular region, the number of women between the ages of 35 and 44 in the labor force can by modeled by the equation

N = 29.6 + 1.20t

where the variable N is measured in thousands, and the variable t is years since 1995.
(a) Identify the slope and the y-intercept (the N-intercept here).
(b) Interpret the slope and the N-intercept in the context of this problem.

4. Sketch each of the following scenarios.
a. The investment grew at approximately \$10 per month.
b. The investment grew at approximately 2% per month.
c. There's a definite learning curve for this job. A brand new employee will probably produce 7 widgets a day, but even a very experienced employee can't produce more than 43 widgets per day.
d. Regardless of price, the demand for insulin remained constant.
e. Factory output is shrinking at a slower pace.
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#### Solution Summary

Percent Increase and Decrease, Slope, Y-intercept, Trends and Trendlines are investigated.

\$2.19