Blank =15 of 80 what is the answer this subject is math and it's 7th grade math

Asailor is looking at a kite. if he is looking at the kite at an angle of elevation of 36and the distance from the boat to the point where the kite is directly overhead is 40 feet, how high is the kite?

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

The function v(r)=4/3pir^3 can be used to find the volume of air inside a basketball given its radius. what does v(r) represent