Which equation is true for all values of x and y shown in the tables below? X -1 -2 -3 -4

Y -12 -6 -4 -3

A) y= x/12
B) y= -12/x
C) y= 12/x
D) y= -x/12

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.