Answer:
If y varies inversely as x, then we write it as:
y = k/x
where k is some constant.
If we multiply both sides of this equation by x we get an equation for k:
k = x*y
We are given that y=4 when x=7, therefore:
k = 7*4 = 28
Put this back into our original equation to get:
y = 28/x
The range of x is:<span>10≤x≤50</span>
The range of C is:<span><span>60≤C≤300</span></span>
I believe its the first one, think of it like a mirror you would flip the shape which would do make x negative and y positive, sorry if im wrong
