Quadrilateral abcd is a square. bc = 10 what is the length of ac? a. 10 sqrt 2 b. 20 sqrt 3 c. 10 sqrt 3 d. sqrt 100

A is the correct answer to this question because AC and BC differ because the B must be changed to an A.

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:

$450 is the answer.

step-by-step explanation:

30% of 450 = 135

450-135=315