1.the approximate distance of the moon from earth is 4 x 10^5 km and the average approximate distance from the earth to venus is 4 x 10^7 km. how much farther is venus from earth than the moon?
a) 10 times farther
b) 100 times farther
c) 1000 times farther

2. compare 6 x 10^5 and 3 x 10^4.
a) 6 x 10^5 is 20 times larger than 3 x 10^4
b) 6 x 10^5 is 15 times larger than 3 x 10^4
c) 6 x 10^5 is 10 times larger larger than 3 x 10^4