Which choice could be modeled by a linear function? A the amount of money, y, in an account after x years earning 4% interest
compounded annually
B the monthly cost, y, to use a cell phone for x minutes at a rate of
4 cents per minute
С
the height, y, of a ball after bouncing x times, if each bounce reaches
the previous height
the amount, y, of radioactive material remaining after x years when decay
occurs at a rate of 30% each year