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C. Solve the following word problems. Show your complete solution. 1. An online seller has some items that she wants to sell at a profit of 30% of the cost of each items. The selling price can be represented as a function of the cost by f(c) = 1.2c where c is the cost of an item. Find the cost of the item if c is 150 pesos. 2. The function of the area of a square is A(s) = 52 where s is the measurement of each side. Find the area of the square if each side measured 10 centimeters. 3. The function of the Area of a circle is A(r) = #r?, wherer is the radius. Find the area of a circle if the radius is 12.5 meters. 4. The cost for burning a 60-watt light bulb is given by the function f(h) = 0.36h, where h represents the number of hours that the bulb is burning. How much does it cost to burn a 60-watt bulb for 10 days when the bulb is burning for 6 hours per day? 5. The function f(t)= (1 - 32) represents the temperature in degrees Celsius where t is the temperature in degrees Fahrenheit. What is the temperature in degree Celsius if the temperature in degree Fahrenheit is 43.
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