Let h(x)=6-2/3x.
a. find h(-6).
b. Find the value of x so that h(x)=2

a. h(-6)=10

b. x=6

Step-by-step explanation:

a.

To find h(-6), you want to plug in x=-6 into h(x).

         [multiply]

                 [add]

Now, we know that h(-6)=10.

------------------------------------------------------------------------------------------------------

b.

To find the value of x, we want to set h(x) equal to 2.

                       [subtract both sides by 6]

                        [multiply both sides by -3/2]

Now, we know that x=6.

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,

.

step-by-step explanation:

.