(q3) which of the following functions decreases, going downwards from left to right?

third option

Step-by-step explanation:

By definition, for the function 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)

Then, each ouput value wil be negative.

Therefore, you can conclude that the  function decreases and going downwards from left to right.

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,