3/2 inches of snow fell in 3/4 of an hour. Which TWO statements are correct? A) The unit rate is 2 inches of snow per hour. B) The unit rate is 3 inches of snow per hour. C) The unit rate is 9/8 inches of snow each hour. D) At the same rate, 4 inches of snow will fall in 6 hours. E) At the same rate, 12 inches of snow will fall in 6 hours.

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.