1. suppose that y varies jointly with w and x and inversly with z and y=400 when w=10, x=25 and z =5. write the equation that models the relationship.
A. y=8z/wx
B. y=8wx/z
C. y=z/8wx
D. wx/8z

2. a drama club is planing a bus trip to new york city to see a broad way play. the cost per person for the bus rental varies inversly to the number of people going on the trip. it will cost $30 per person if 44 people go on the trip. how much will it cost per person if 20 people go? round the answer to the nearest cent, if necessary.
A. $44.00
B. $22.00
C. $33.50
D. $66.00

Question

1. suppose that y varies jointly with w and x and inversly with z and y=400 when w=10, x=25 and z =5. write the equation that models the relationship. 
A. y=8z/wx 
B. y=8wx/z 
C. y=z/8wx 
D. wx/8z 

2. a drama club is planing a bus trip to new york city to see a broad way play. the cost per person for the bus rental varies inversly to the number of people going on the trip. it will cost $30 per person if 44 people go on the trip. how much will it cost per person if 20 people go? round the answer to the nearest cent, if necessary. 
A. $44.00 
B. $22.00 
C. $33.50 
D. $66.00