A mover loads a 100 kg box into the back of a moving truck by pushing it up a ramp. The ramp is 4 m long and the back of the truck is 1.5 m high. Calculate the force required to push the box up the ramp in the absence of friction.

The independent variable would be the fertilizer as it is what the dependent variable (the growth of grass) depends on.

Make them both to where they have the denominator of 18that makes 3/2 equal 27/18 and 1/9 equal 2/18so now you have  27/18x+5=2/18subtract 5 from the other sideso now you have 27/18x+2/18-5then subtract 2/18 from 27/18 to get 25/18x=-5then divide 25/18 by -5 and your answer will be  -5/18

Iwas thinking the wavelength is one half its original value