1.) if h varies jointly as i and and the square of j and inversely as g; and h =50 when j =2. i=5 ang g=½, find h when j=4, i = 10 and g=¼.

A.)25
B.)100
C.)800
D.)50

2.) if a varies jointly as b and c and a=21 when b =7 and C=6
what is the constant of the variation?
A.)½
B.)⅓
C.)2
D.) 3

3.) x varies directly as y and inversely as z and x=3 when y=6 and z=12 . what is the constant of the variation?
A.) 3
B.)6
C.) 9
D.)12

4.)w varies directly as the square of x and inversely as p and q.if w=12 when x=4 ,p=2 and q = 20. Find w when x=3, p=8 and q=5.

A.)10
B.)9
C.)27/4
D.) 9/5

5.) if s varies directly as t and inversely as v, then which of ghe following equation describes the relations among the three variables s,t and v?

A.)s = k/tv
B.)s = kv/t
C.)1/s = kt/v
D.)s = kt/v

Help me guys pleaseeeee.​