Answers created by /Alleged /.

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• How do you add #5\sqrt { 2y } + 7\sqrt { 2y }#?
  
• Evaluate the integral by making the given substitution. (Use C for the constant of integration.)?
  
• Question #f8cf7
  
• How do you divide #(4x^3+7x^2-9x+15)/(x+1) #?
  
• If #f(x) = 5x+12#, what is #f^-1(x)#?
  
• An airplane took 3 hours to fly 600 miles against a headwind. The return trip with the wind took 2 hours. Find the speed of the plane in still air and the speed of the wind?
  
• Doug earns $10.50 per hour working at a restaurant. On Friday, he spent 1.75 hours cleaning, 2.33 hours doing paperwork and 1 hour and 25 minutes serving costumers. What were Doug's earnings?