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4. Let T(t) be the temperature (in degrees Celsius) be the inside temperature of your car when it is 32" C outside, and t be the time in minutes that your car is stopped (no air conditioning). (6 marks) a. What does 7" (10) = 0.5 mean? b. Given 7(10) = 43 and 7"(10) = 0.5, estimate T(12) = c. What does that mean for leaving pets or children in the car for a "just 10 minutes" when it is 32" C outside?3. Find the equation of the tangent line at the given point (4 marks): a. g(x) = (x+ vx -1) when x = 1