I think that is proportional
Circumference = 2πr or πd
The formula for circumference is 2πr (2 times pi times the radius)
2r = d (The radius x 2 = the diameter), so the circumference also = πd (pi times the diameter)
Remember you can do anything to an equiaotn aslong as you do it to both sides
try to isolae the variable then find 1 of it
50=7x-6
add 6 to both sides
56=7x
divide both sides by 7
x=8
Given:
261 for 3 nights.
Find the cost for a 7 night stay.
We need to get the unit rate.
261 ÷ 3 nights =<span> </span>87 per night
87 x 7 nights = 609 for a 7 night stay.