Given the exponential equation 4x = 64, what is the logarithmic form of the equation in base 10? x = log base 2 of 64, all over log base 2 of 4 x = log base 2 of 4, all over log base 2 of 64 x = log base 10 of 64, all over log base 10 of 4 x = log base 10 of 4, all over log base 10 of 64

The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z