A. is this mapping diagram a function? why or why not?

b. what is the domain of the mapping diagram?

c. what is the range of the mapping diagram?

40--C   A ---is not[figure it out in your own words,your teacher might suspect something] and B---times 40

Step-by-step explanation:

b--40+40=80   80+40=120 and 120+40=160                A=subtract 40 from all the other answers such as 40-160=120       40-120=80  and 40-80=40

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,