What is the average of 22.10, 13.45, 25.10, 17.20, 19.10?

Solve the system of equations. y= 2x y= x^2 - 15

Two lines parallel to the same plane are parallel to eachother

Tod does not have any cookies. david gives jeff 8 cookies. then he splits half of the cookies he has left with tod. david let’s c represent the number of cookies that he starts with. he finds the number of cookies that tod has is 1/2 the difference of c and 8. write an expression to represent the number of cookies that tod has.