Answer:
Step-by-step explanation:
volume=length×width×height
V=(4x-3)(x+1)(x+2)
=(4x-3)[x²+2x+x+2]
=(4x-3)(x²+3x+2)
=4x(x²+3x+2)-3(x²+3x+2)
=4x³+12x²+8x-3x²-9x-6
=4x³+9x²-x-6
Find answer is the given attachment
28
Well we know that in a day there are 24 hrs so in 4 days there will be 96 hrs
so the car travelled 2686 miles in 96 hours
2686/96= 27.9791666667
So the car's average speed is about 28
4
This would mean 3x=5
so to isolate the x, we divide 5 by 3
and get x=5/3
