How do you find how many times greater a power is for example how many times greater is 2 to the power of 30 than 2 to the power of 18

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap

The circumference of a redwood tree trunk is 20π ft, and it is 100 ft tall. what is the approximate volume of the redwood tree trunk? 1,000π ft3 10,000π ft3 4,000π ft3 40,000π ft3

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry