Which property is illustrated by this example 85 + (75 + 25) = (85 + 75) +25, associative, distributive, multiplication property of zero, commutative

How many zeros does the function f(x)=4x3-x2+1 have

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

Sketch one cycle if the cosine function y=2cos2theta