Brandon swims several times per week in a lake near his home. last summer, the average water temperature was 20 °c. this summer, the average water temperature was 17 °c. what was the percent of decrease in the temperature?

Ben wants to play a carnival game that costs $2. in his pocket he has 5 red tickets worth 35 cents each, and 15 blue tickets worth 10 cents each. which of the following systems of inequalities correctly represents the constraints on the variables in this problem? let represent the red tickets and b represent the blue tickets.

How many square feet of out door carpet will we need for this hole? 8ft 3ft 12ft 4ft

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3