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A nurse is caring for a patient experiencing severe hypoxia. Which oxygen delivery system provides the highest concentration of oxygen?

A nurse is caring for a patient receiving 100% oxygen via a non-rebreather mask for several hours. Which symptom should alert the nurse to possible oxygen toxicity?

Postural drainage with percussion and vibration is ordered twice daily for a patient with chronic bronchitis. Which intervention would the nurse include in the plan of care?

 A manufacturer produces a product which it sells for $60 per unit. The variable cost per unit is $20 and the fixed cost per month is $10,000.   How many units must be sold per month to break even? 

What principal will grow to $12,031.25 at 7.5% interest in 15 months? 

Canadian Tire purchases microwaves from a wholesaler for $49 and marks them up by 25% of selling price. At the end of the summer, a floor-display model’s price is reduced to 12% above cost. What percentage price reduction should the price tag show? 

What amount would you have to invest now at 7% compounded annually in order to make withdrawals of $20,000 once per year for 25 years? The first withdrawal is to be made one year from now. 

PROBLEM 2 ( Total 10 marks) Part A- ( 5 marks) An invoice states that interest will be charged on overdue accounts at the rate of 1½% per month. What will be the interest charges on a $3,760 billing that is 3 months overdue?     Part B- (5 marks) A two-payment stream consisting of $1,750 due today and $2,900 due in 18 months is to be replaced by an economically equivalent stream comprised of an undetermined payment due in 9 months and a payment of $3,000 due in 19 months. Calculate the unknown replacement payment if money is worth 4.2% compounded monthly.         

How much interest will be earned on $8,000 over a period of four months if the interest rate is 6.5%? 

How much money would you have at the end of 10 years if you made deposits of $4,000 at the end of every three months into an investment that accumulated at 9% compounded quarterly?