WILL GIVE BRAINLIST 20 POINTS
The following expression is a polynomial: 3x^2y^2 - 2xy
Part A: Classify the polynomial according to its number of terms. Explain how you know your answer is correct.
Part B: Classify the polynomial according to its degree. Explain how you know your answer is correct

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.