Advance functions, handwriting 1to 5

Culminating Assignment MCR3U / 47 1. Consider the functions RX) = - 3x and () = x . Determine 1 12 ) - 8 (3 ). . [4marks] 2. For g(x) = (x + 7)" + 6x determine the input for x when the output of g(x) = 13. [4marks] 3. Simplify (7+ 50 ) (-9 - 32 ) [4marks] 4. Simplify the expression. Express your answer with positive exponents. [5marks] x12 ) 025 216x (3x)6 18 05 5. A baker records the internal temperature of a pie that has been left to cool on a counter. The room temperature is 140C. An equation that models this situation is T(!) - 68(0.5) " + 14 where T is the temperature in degrees Celsius and t is the time in minutes. Determine the temperature, to the nearest degree, of the pie after 15 minutes. How much time did it take for the pie to reach an internal temperature of 31.C? [6 marks]