John studied for 22.5 hours over a period of 3.5 days. on average, about how many hours did he study each day?
a -- 4.6 hours
b -- 5.9 hours
c -- 6.4 hours
d -- 7.3 hours

Light travels at 186,000 miles per second. light takes about 1 1? 3 seconds to travel from the earth to the moon. calculate the distance between the earth and the moon based on the speed of light.