The distance from phoenix to los angeles is 400 miles. a car traveled this distance in 6 hours and 40 minutes. what was the average speed of the car in miles per hour?

Which graph represents the following piecewise defined function?

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.

Liz is shipping a package to her friend.the maximum weight of a medium flat-rate box is 20 pounds,including the box which weighs 6 ounces.write and solve an inequality to describe the possible weight ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.