If a space heater draws 10 amps from a 120-volt household circuit, and electricity costs 100 per
kilowatt-hour, how much has it cost to run the space heater for 3 hours? Note that a watt-hour is
equal to 1 watt of power used for one hour.
A. $0.12
B. $0.36
C. $1.20
D. $3.60
E. $4.28

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:

Acylinder has volume 45π and radius 3. what is it’s height?

Billy plotted −3 4 and −1 4 on a number line to determine that −3 4 is smaller than −1 4 .is he correct? explain why or why not