19. A building casts an 80-foot shadow. If the angle of elevation from the tip of the shadow to the top of the
building is 35º, how tall is the building?
20. You stand 50 feet from the base of a 30-foot tree. What
is the angle of elevation from your feet to the top of the
tree?

the direct variation says that:

then the equation is of the form is given by:

            where k is the constant variation.

from the given table:

consider any value of x and m(x)=y

x = 2 and m(x)=y = 3

substitute these value in [1]; we have;

divide both sides by 2 we get;

⇒

check:

put x = -1 and m(x) = -1.5

substitute in the equation:

-1.5 = -1.5                   true

therefore, the function m(x) represents a direct variation

graph of this function as shown below:

according to egenuity the answer is

step-by-step explanation:

d. 344.22