3x-2y=-3 (label equation 1) and x=2y-1 (label equation 2)
3(2y-1)-2y=-3 (sub 2 into 1)
6y-3-2y=-3
4y-3=-3
+3 +3
4y=0
y=0
sub y=o into equation 2
x= 2(0)-1
x=-1
therefore the co-ordinates are (-1,0)
Part A: f(x)=(5)x+20(alligators) and f(x)=(10)x+25(crocodiles)
Part B: f(x)=(5)(4)+20(alligators) and f(x)=(10)(4)+25(crocodiles)
Alligators: 40 and Crocodiles: 65
Part C: None because the rate of the alligators won't catch up with the rate of crocodiles.
Steps to solve:
~Take log of both sides
~Round to the nearest thousandth
0.63093 → 0.631
Best of Luck!
B. Point F, B, and C are coplanar
In fact, A is wrong, because you can't draw a line passing through D, G, and F
Also, C is wrong because point E is not on the orange plane
For the same reason, D is wrong because line AE seems perpendicular to the plane, but anyway it surely does not lie on the plane