Please help!! The freezing point of water is 32°F. When water is at or below this temperature, it is in solid form.

Which statements are true about the inequality that represents the temperatures at which water is in solid form, and its graph? Check all that apply.
The number 32 is part of the solution set.
The circle on the graph is open.
The circle on the graph is closed.
The arrow on the graph points to the left.
The arrow on the graph points to the right.

What is the correlation coefficient for the data? don't forget to turn the diagnoisticon (in the catalog menu of the calculator). r = answer (round to the nearest thousandth)

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

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.