The table below gives the dimensions of a bridge and a scale model of the bridge.
find the scale factor of the model to the real bridge.
write your answer as a fraction in simplest form.

find scale factor

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,

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value