Need help simulating these problems in simulink/matlab

Problem 1 This Problem is worth 2 points Create a Simulink model that has a Constant of value 3 and its Integral, both values connected to a single Scope. a. Simulate this model for 5 seconds b. Simulate this model for 20 seconds Problem 2 This Problem is worth 2 points Create a Simulink model that has 3 separate Sine waves of amplitudes 1, 2, and 3. Connect them each to a single Scope, and then using a Mux block, connect the Mux output to another Scope, Simulate the model for 20 seconds. Problem 3 This Problem is worth 2 points Generate a Ramped Sine Wave model. This is a Sine Wave multiplied by a Ramp, given the following parameters: Sine Wave: Amplitude 2, Frequency 2 rad/sec Ramp: Slope 0.25, Start time 3 sec Simulation Time 25 seconds Problem 4 This Problem is worth 2 points Create a new Simulink model that multiplies the result of a Uniform Random Number block with a Pulse Generator block Uniform Random Number: Minimum -3, Maximum 3 Pulse Generator: Period-5 seconds, 50% pulse width, Amplitude-1 Simulate this for 20 seconds