y varies inversely with x k = 2.8 What is the value of x when y is 22.4? A. x = 62.72 B. x = 8 C. x = 2.8 D. x = 0.125

Respuesta :

D

working :
y=k/x
when k=2.8
y=2.8/x
sub y=22.4,
22.4=2.8/x
x=2.8/22.4
x=0.125