Ben wants to buy a new collar for each of his four dogs. The colors come in a choice of nine different colors. How many selections of collars for the four dogs are possible if repetitions of colors are allowed?

The pressure exerted on the walls of a container by a gas enclosed within it is directly proportional to the temperature of the gas. if the pressure is 6 pounds per square inch when the temperature is find the pressure exerted when the temperature of the gas is 380 degrees f show work for the

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles. i'm desperate.

What is the range for 31,39,29,34,37,24,36,33,34,28