1. Kc = 4 √(4s+1)

What is the domain of the function defined by this equation? what restrictions do nature put on S?

2. Write the equation of the line passing through (-1, 1) with undefined slope.

3. The percentage P of high school seniors who have tried cigarettes can be described by:

P= 75.4509 – 0.706948t

Where t is the number of years past 1975.

a. Write a sentence which interprets slope

b. Here, what does P-intercept means?

c. What is the annual rate of change of percent?

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