Please complete questions 1-3. All parts

1. Describe two instances where an instantaneous rate of change can equal zero. Give an example of a function that illustrates each instance. (4 marks) f(x) = - 2. Given x-4 and g(x) = sin.x . Would the domain of (f . g)(x) be the same as the domain of (g . )(x) ? Explain. (2 marks) 3. The student council of a school is selling t-shirts to raise money for their school. The cost to purchase t-shirts from the manufacturer is $200 for the order and $5 per t-shirt. The student council sells the t-shirts for $15 each. (a) Let R represent Revenue, Let C represents cost, and let / represents the number of t-shirts. Determine an equation for () and C'() (2 mark)