4. [4 marks] A new knee osteoarthritis medication has been developed with the potential side effect of increased blood pressure. When x mg (milligrames) of the drug is taken daily, the blood pressure increase is given as: R(x) = 0.5ex/1500 (x2 - 6x - 95) mmHg (millimetres of mercury) (a) Assuming a daily dose of 40 mg is taken, determine the increase in blood pressure rounded to one decimal. . Your answer should include units. (b) For example, R'(r) is a measure of the drug's sensitivity (the more sensitive it is, the greater the increase in blood pressure that occurs with an increased dosage). Determine how sensitive the blood pressure is to 40 mg of the drug. Your answer should include units. Is there an increase in blood pressure? Grade: 25