6000 is invested. part of it at 20% and part of it at 4%. for a certain year the total yield is 800.00. how much was invested at 20% and how much was invested at 4%?

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

In the diagram, gef and hef are congruent. what is the value of x

Which of the following graphs could represent a cubic function?