A stock price has a price of $7.50 per share at the beginning of the week. At the end of the week, the stock price is $9.45 per share. (a) What is the percent increase in the stock's price per share for the week? (b) The $7.50 price per share represents a 40% decrease from the price per share last week. What was the price per share last week? (c) The stock price is projected to increase by 40% from the $9.45 per share price by the end of the year. What is the projected price of the stock?

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?