Question

(Q3) Which of the following functions decreases, going downwards from left to right?

Answer 1

The answer is B.

Explanation:

got it right on edge.

Answer 2

Answer: third option

Explanation:

By definition, for the function
`y=b^x` if 0<b<1 then the function decreases from left to right

Therefore, it cannot be the options 1 or the option 2.

As the function given in the third option of problem has a negative coefficient (which is -2) and b=0.3 (0<b<1)

`y=-2*0.3^x`

Then, each ouput value wil be negative.

Therefore, you can conclude that the function
`y=-2*0.3^x` decreases and going downwards from left to right.