40 pts. Only Real Answers Which of the following is a true statement? A. The opposite of −45 is equal to the absolute value of −45. B. The opposite of 45 is equal to the absolute value of −45. C. The opposite of −45 is not equal to the absolute value of 45. D. The opposite of 45 is equal to the absolute value of 45.

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.