An incadescent lightbulb has a power of 60 w and an efficiency of 1.7%. a cfl bulb has a power of 18 w and an efficiency of 8.5%. 1. how much energy is used when the incadescent bulb is left on for 12 hours?
2. how much light power does the cfl bulb produce?
3. In 12 hours, how much heat neergy does the incadescent bulb give off?

i believe the answer is the polygon, heptagon.

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,

i think the amount would be $140.62