Two lines are perpendicular and slope of the red line is -7, what the slope of the green line?

Carley bought a jacket that was discounted 10% off the original price. the expression below represents the discounted price in dollars, based on x, the original price of the jacket.

An engineer scale model shows a building that is 3 inches tall. if the scale is 1 inch = 600 feet, how tall is the actual building?

Sate why the measure of angle d is 120 degrees