Choose the appropriate description for the type of change this expression will have as x increases from 1/3 A. will increase with linear change.
B. will increase with non-linear change.
C. will decrease with linear change.
D. will decrease with non-linear change.

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?