The value of y is directly proportional to x. Find the constant of proportionality when x = 12 and y = 3.

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

Mr. thompson is on a diet. he currently weighs 260 pounds. he loses 4 pounds per month. what part of the story makes the relationship not proportional?