Chapter 6.4, Problem 72E

The daily cost to the printing company to print a book is modeled by the function C(x)=3.25x+1500C(x)=3.25x+1500 where C is the total daily cost and x is the number of books printed.   ⓐ Determine the independent and dependent variable.   ⓑ Find N(0).N(0). Explain what this result means.   ⓒ Find N(1000).N(1000). Explain what this result means.

y 6. y = f(x) 4 3 L

The number of people in a school that have caught a cold can be modeled by C(d) = 3(4d) where C(d) is the number of people who have caught a cold after d days. (a) Use the model to estimate the number of people who have caught this cold after 5 days. (Include units in your answer. More information.) After 5 days have passed, X Units are required for this answer. have caught the cold. (b) Use the model to estimate how long it takes for 192 people to catch this cold. (Include units in your answer. More information.) It takes for 192 people to catch the cold.