Problem 3. Write an expression that represents the area between the two functions y = gale + 15 and y = z + 4 over the interval [5.9). Then evaluate using Wolframs Alpha. Include a screenshot of the results. Problem 4. The marginal cost (rate of change of total cost) in dollars per unit is being modeled by the function C'(g) = 0.02y' - q + 16. Write an expression for the the total (net) change in the total cost from the production level q = 5 to time q = 25, and evaluate izing Wolfram Alpha. Include a screenshot of your results. Problem 5. Suppose the systolic blood pressure of a patient in response to medication can be modeled by S(t) = 8ve + 50, where f is time in minutes after the medication was taken. Write an expression for the average value of the systolic blood pressure S(!) over the interval [0, 35). Then use Wolfram Alpha to evaluate and include a screenshot of the results. Problem 6. Integrate the following (a) ( (3 + 6s' + e # ) de= () [ (2 + r) d = (4) (38 3 - 10') dr = Problem 7. For a product, the demand curve is p = 30 - and the supply curve is (a) Graph the curves and label the equilibrium point. Shade and label the areas corre- sponding to the consumer and producer surplus