Your company takes orders over the phone. the company’s average call time is 4.6 minutes. the graph below shows 4 calls and the difference between the call time and the company’s average call time. for these 4 calls, what is the mean difference between the call times and the company’s average call time, rounded to the nearest 0.1 minute?

10 points? me . its important ‼️‼️

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

Math i have no idea how to do a and b