Hannah likes candy. she wants to purchase some candies. all varieties of candy are 4.20 each. hannah buys one mango candy and one apple candy. write an expression that represents the total cost, t,of candy if m represents the number of mango candies and a represents the number of apple candies

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