Discussion Topic When calculating the cost of a good or service, you often have to consider price
markups and discounts. Consider these two statements regarding a discounted item
• The list price of the item is 80 percent of the original price,
• The price of the item has been reduced by 80 percent
Write a pair of linear equations using variables of your choice to prove that these two
statements are not equivalent. Explain how a calculation for change in percentage
(increase or decrease) is different from a calculation that involves multiplying by
percentages. Why is the wording of percentage problems so important? Give examples
to illustrate your point.

An airplane consumes fuel at a constant rate while flying through clear skies, and it consumes fuel at a rate of 64 gallons per minute while flying through rain clouds. let c represent the number of minutes the plane can fly through clear skies and r represent the number of minutes the plane can fly through rain clouds without consuming all of its fuel. 56c+64r < 900056c+64r< 9000 according to the inequality, at what rate does the airplane consume fuel while flying through clear skies, and how much fuel does it have before takeoff? the airplane consumes fuel at a rate of gallons per minute while flying through clear skies, and it has gallons of fuel before takeoff. does the airplane have enough fuel to fly for 60 minutes through clear skies and 90 minutes through rain clouds?