The number of milligrams of caffeine (y) in Mr. H's system x hours after his last cup of coffee for the day is represented by the equation y = 40 – 8.5x. Predict
the amount of caffeine in Mr. H's system 4.5 hours after his last cup of coffee for the
day.

What is the rule for reflection across the y axis

Pyotr tchaikovsky sporting goods operates on a 45% overhead based on the selling price, which results in an overhead of $65.34 on the newest version of an air hockey game set. if the air hockey game set costs pyotr tchaikovsky sports $49.32, find the selling price, the markup, and the net profit.

Anne plans to increase the prices of all the items in her store by 5%. to the nearest cent, how much will an artist save if the artist buys a canvas and a frame that each measure 24 by 36 inches before the price increase goes into effect?