Karen has a bag containing the following marbles: 3 red marbles
4 green marbles
1 yellow marble
Karen randomly selected a marble from the bag and
then put it back in the bag. She did this a total of
200 times, and 67 times the marble she selected
was red. What was the difference between the
number of times she actually selected a red marble
and the number of times she should have expected
to select a red marble? For this question you’ll have to explain the answer

The production line where you work can assemble 5 appliers every 30 minutes at this rate how long should it take the line to assemble 125 amplifiers

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.

Need so much on this one how many yards?