Y=(1/2)x cause the constant variation is 1/2
Motorcyclist: 2 hours
Bus: 2.5 hours
Truck: 3 hours
Bicyclist: 7.5 hours
Well, 625 is 5 x 5 x 5 x 5 .
So that would be:
(5)⁴
5 x (5)³
(5)² x (5)²
And you could even go the other way if you want to get silly:
(5)⁵ x (5)⁻¹
(5)⁶ x (5)⁻²
.
.
etc.
0.3 is your answer to your question
5.50 divided by 10 gives you 55. There will be 55 dimes in $5.50 :)
