test the effectiveness of a carbon monoxide (CO) alarm, a company begins a controlled experiment that delivers carbon monoxide to a closed room at the rate of 1.5% of the current amount in the room every 2 hours. Find an exponential model for the amount of CO in the room C (in ppm) as a function of time t (in hr) from the beginning of the experiment when there are 30 parts per million CO in the room. C =     Use your model to predict the amount of CO (in ppm) in the room 13 hours after the experiment begins. (Round your answer to one decimal place.)

the half life of caffeine in a healthy adult's bloodstream in 5.7 hours. suppose alex, a healthy adult, drinka a grande latte, which contains 150mg of caffeine, at 4pm. use the exponential decay model where t is the time since 4 pm measured in hours, k is exponential decay rate of caffeine and a9t) is the amount of caffeine in alex's bloodstream at time t

Find the exponential function that passes through the points (−10/13 , 6) and (14 ,1/10). Round the numbers in your final answer to three decimal places each.

The concentration of DDT (dichlorodiphenyltrichloroethane) in Lake Erie has been declining exponentially over the last several decades. In 1970, the DDT concentration was 13.59 ppm (parts per million). In 1985, the DDT concentration was 2.37 ppm. Part 1. Using these data points, determine the exponential decay function to model the DDT concentration decline in terms of years, tt, where t=0 represents the year 1970. (Round values to 4 decimal places)   Part 2.

Seeds found in a grave in Egypt proved to have only 58% of the Carbon-14 of living tissue. The half-life of Carbon-14 is 5730 years. When were the seeds harvested?

A cup of 205° coffee on a table in a 72° room loses approximately 15% of its temperature every minute until it reaches room temperature. The resulting exponential model for the temperature, t, after m minutes can be approximated by the model t = 133(0.85)m+72. What is the temperature after 3 minutes?

Which of the following exponential functions grows at the slowest rate ? Select one: O a. y = 4x² O b. y = .5-* O c. y = ex O d. y = -0.5*

An assortment of 100 fish is put into a fish tank; the fish population grows at a continuous rate of 23% per hour. How long until the population doubles in size? (round to the nearest fish)