ratio, proportion and rates of change

simplify 2.4 : 3.6

what does direct proportion mean

what does inverse proportion mean

write an equation for y being inversely proportional to the cube root of x

what is the equation for % change

what is the formula for compound growth and decay

1 yard = _ feet
1 gallon = _pints
1 stone = _ pounds
1 pound = _ ounces
1 foot = _ inches

1cm = _mm
1m = _cm
1km = _ m
1kg = _ g

1 tonne = _ kg
1 litre = _ ml
1 litre = _ cm³
1cm³ = _ ml

speed =

density =

pressure =