If the base of a triangle is represented by 2x+5 and the height is represented by 4x which expression represents the area of the triangle A.(2x+5)+(4x)
B. (2x+5)(4x)
C. 1/2(2x+5)+(4x)
D. 1/2(2x+5)(4x)

Can someone me with this problem i don't understand i need

Adoctor administers a drug to a 38-kg patient, using a dosage formula of 50 mg/kg/day. assume that the drug is available in a 100 mg per 5 ml suspension or in 500 mg tablets. a. how many tablets should a 38-kg patient take every four hours? b. the suspension with a drop factor of 10 ggt/ml delivers the drug intravenously to the patient over a twelve-hour period. what flow rate should be used in units of ggt/hr? a. the patient should take nothing pills every four hours. (type an integer or decimal rounded to the nearest hundredth as needed.)

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?