1. if the stores sell flour for $0.75 per 1 kg how much would it cost for 180g
2. if the stores sell milk for $1.99 per 1 l how much would it cost for 60ml
3. if the stores sell cream cheese for $3.15 per 108 g how much would it cost for 40g
4. if the stores sell icing sugar for $1.95 per 500 g how much would it cost for 200g
5. if the stores sell vegetable oil for $2.24 per 750 ml how much would it cost for 15ml

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%

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations

Asource of laser light sends rays ab and ac toward two opposite walls of a hall. the light rays strike the walls at points b and c, as shown below: what is the distance between the walls?