What degree of rotation is represented on this matrix

Option B is correct

the degree of rotation is,

Step-by-step explanation:

A rotation matrix is a matrix that is used to perform a rotation in Euclidean space.

To find the degree of rotation using a standard rotation matrix i.e,

Given the matrix:

Now, equate the given matrix with standard matrix we have;

=  

On comparing we get;

      and  

As,we know:

we get;

and

we get;

Therefore, the degree of rotation is,

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13

answer: hence, function will be

explanation:

since we have given that

cost of a new textbook = $85

according to question, the resale value of a textbook decreases by 25% with each previous owner,

so, our function becomes,

here, y is the total value of the text book after x owners.

hence, function will be