Write a function rule for each situation. Then use your function as indicated.
Money You give a salesperson $ 20 for a purchase and receive change. Use your function to find the amount of change from a $ 4.50 purchase.

Question

Write a function rule for each situation. Then use your function as indicated.
Money You give a salesperson $ 20 for a purchase and receive change. Use your function to find the amount of change from a $ 4.50 purchase.

anonymous · Answer

Haven't done functions in a very longgggg time...but I would say to start off have... Amount given = f(purchase amount) f(4.50) = 20 C = cost C = f(4.50) = amount given - purchase amount also this may help you http://www.scsk12.org/SCS/curriculum_guides/6-12_Math_Webpage/PDF/Linear_Functions_Equations_and_Inequalities.pdf

anonymous · Answer

whats my answer