Question 1- Hansen took his family for a vacation to Halifax, Nova Scotia last summer. If his hotel room rental cost $256.70 per night (including 15% HST), calculate the amount of tax charged (HST) on the room rent per night.

Question 2- Kaitlyn is paid a base salary of $13,000 per year. In addition to this salary, she receives commission on sales exceeding $9,000. Her total salary for last month was $2,500 and her sales were $13,750. Calculate her commission rate.

Question 3- Last month, a 770 g box of cereal was sold at a grocery store for $3.20. However, this month, the cereal manufacturer launched the same cereal in a 650 g box, which is being sold at $2.80. What is the percent change in the unit price?

Question 4- A Chief Executive Officer of an investment firm receives a gross salary of $800,000 per annum.

4) a. What is his periodic gross payments if he is paid monthly?

4) b. What is his periodic gross payments if he is paid bi-weekly?