Does anybody know the answer to this equation? // * ANSWER ASAP *

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered

Hi i’m not sure how to do question 20 if u could explain how to do it that’d b great

If a=0.333333 and b=0.55555, what is the value of a+b