Adoctor orders 200 mg of rocephin to be taken by a 15.4 lb infant every 8 hours. the medication label shows that 75-150 mg/kg per day is the appropriate dosage range. is this doctor's order within the desired range? i5.4lb 22-7k7 4es

Yes, the doctor's order within the desired range

Step-by-step explanation:

Given:

Dosage of Rocephin ordered = 200 mg

Mass of the infant = 15.4 lb

1 lb = 0.453592 kg

thus,

15.4 lb = 0.453  × 15.4 = 6.97 kg

Dosage is provided every 8 hours

thus,

Number of dosage per day = = 3

Hence,

the total dosage ordered per day = 200 × 3 = 600 mg

Dosage ordered per kg of infant per day =

or

Dosage ordered per kg of infant per day = 86.083 mg/kg per day

Yes, the doctor's order within the desired range

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations: