Exercise 17.2 1 A ship leaves harbour and sails 80 km on a bearing of 120°. It then sails 100 km on a bearing of 030º.
a Make a scale drawing of the ship's journey. Use a scale where 1 cm represents 10 km.
b How far must the ship now sail to return to the harbour?
c What bearing must the ship now sail on, to return to the harbour?

At the beginning of the day, stock xyz opened at $6.12. at the end of the day, it closed at $6.88. what is the rate of change of stock xyz? a. 1.17% b. 11.0% c. 12.4% d. 81.5%

The manufacturer of a new product developed the following expression to predict the monthly profit, in thousands of dollars, from sales of the productwhen it is sold at a unit price of x dollars.-0.5x^2 + 22x - 224what is represented by the zero(s) of the expression? a.the profit when the unit price is equal to 0b.the unit price(s) when the profit is equal to 0c.the profit when the unit price is greatestd.the unit price(s) when profit is greatest

Which one ? is the answer and how to find this answer