Arandom variable x has a mean of 10 and a standard deviation of 3. if two is added to each value of x, what will the new mean and standard deviation be? i'm really not sure how to even go about this, any given is appreciated. you!

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