Originally Posted by

**rock candy** i dunno if its right but i did this for #2

i think i messed up the units but i got ( 1.22 cm/min) as the rate

2m/ 4m/min = y / x --> y = 1/2 x

hence the top is ( 3 + 1/2x + 1/2 x)

volume = (1/2) ( l + b ) h * L

v=(1/2) (3 + 3 + 1/2x + 1/2x) x * 16

v= (1/2) (6 + x) 16x

2 v = 96x + 16x^2

2 dv/dt = 96 + 36x dx/dt

2( 4 ) = 96 + 36 (2) dx/dt

dx/dt = 1.22

im looking at it now this is right but its wrong... cuz the units are off i assumed everything was in metres fix that and adjust my stuff