a small object with an initial temperature of 135 degrees fahrenheit is dropped into a tub with a temperature of 60 degrees fahrenheit. the function f(t)=ce(−kt)+60 represents the situation, where t is time in minutes, c is a constant, and k is a constant. after 6 minutes the object has a temperature of 85 degrees. what is the approximate value of k? round to three decimal places.

What kinds of antigens are found on the rbcs of a person with a+ blood

Rick is on a bicycle trip. every 4 days he bikes 230 km. if rick keeps this same pace for 16 days, how many kilometers will he bike?

Mr. chiu made a dot plot after asking his students a question. based on the dot plot, which statements are correct? check all that apply. eleven students answered mr. chiu's question. twelve students answered mr. chiu's question. three people studied for two hours. three people studied for three hours. everyone who responded studied for at least one hour. four people studied for four or more hours