29. B 500min
30. C 3ft
31. im not sure but i think its A 16
If a > 0, b>0, show that f(x)= a(1-e^-bx)
B. 2
if any other number was in there i dont think it would work because its neg
{ 3-y=2x
{ x+1/2y=3/2
{ -y=2x-3
{ 1/2y=3/2-x
{ y=-2x+3
{ y=3-2x
-2x+3=3-2x
(x,y) = (x,-2x+3)
