For this case we can observe both functions in the graph.
Both functions are a straight line.
Since the function is the same then the solution for the equation f (x) = g (x) is:
x that belongs to all real numbers. NOTE: see graphic.
Because RS is perpendicular to ST so the slope of line ST is -
Answer:
Coin 1 = quarter
Coin 2 = dine
Coin 3 = penny
Step-by-step explanation: