Question

True or false?
The following table expresses y as a function of x.
weight(lb) cost(s)

x
0 to 10
11to 30
31 to 79
80 to 99

y
4.43
11.64
33.92
56.14

Answer 1

Nope.

Answer 2

false ?

Answer 3

thanks

Answer 4

i need clue(helpline) i.e. 50 - 50.