Your cell phone company charges you $15 a month plus$0.05 for every minute or part of a minute that you use. you want your monthly bill to be under $35. what is the maximum number of minutes you can talk? will mark brainiest and i just need that is ! a: x < 400 b: x > 400 c: x less than or equal to 400 d: x is greater than or equal to

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