4. Nike shoes cost $15 to make and then are marked up by 550% of the cost to make them. What is the cost of a Nike shoe after the mark up? A. $20.50 B$23.25 C. $82.50 D. $97.50​

Answer this question only if you know the answer! 30 points and

Aplane flies around trip to philadelphia it flies to philadelphia at 220 miles per hour and back home with a tailwind at 280 miles per hour if the total trip takes 6.5 hours how many miles does the plane fly round trip

Which of these angles are supplementary? a. 100o and 90o b. 78o and 102o c. 54o and 146o d. 12o and 78o