Question

Please find my question attached.

Answer 1

I can't find it

Answer 2

which one?

Answer 3

question 16

Answer 4

proportional to 4th power means : y = kx^4
Let x be axle load of car, then axle load of truck is 15x
y is damage to road surface

For car --> y = kx^4
For truck --> y = k(15x)^4 = 50,625kx^4

ratio = 50,625kx^4 / kx^4 = 50,625

So the 44-ton truck causes 50,625 times more road damage than a car

Answer 5

thanks

Answer 6

Actually, For truck --> y = k(15x)^4 = 50,625kx^4????????????, could you explain that to me please.