It costs $150 to be a member of a music club. A member of the club pays $5 per music lesson. A nonmember pay $15 per music lesson. How many music lessons must a member and a nonmember take so the cost for each is the same?

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

How to do a maths question? i have a mock

Ben and cam are scuba diving. ben is 15.815.8 meters below the surface of the water. cam is 4.24.2 meters above ben. what is cam's position relative to the surface of the water? choose 1 choose 1 (choice a) a 11.611.6 meters above the surface of the water (choice b) b 11.611.6 meters below the surface of the water (choice c) c 2020 meters above the surface of the water (choice d) d 20 meters below the surface of the water