What is the difference in kilowatt hours of monthly energy production between an average local wind speed of 15 miles per hour and average local wind speed of 10 miles per hour

What expression is equivalent to 1/2(2+3x-6)

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)