A biologist studying bacteria finds that when the bacteria are exposed to ultraviolet light, the population can be modeled by an exponential decay function with 9% as the rate of decrease. Which could be the function that models the bacteria population?

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle? by using compass take the measures of angle and draw the same arc according to it.