Draw a line segment AB of length 6.6 cm. Bisect it perpendicularly at N using a ruler and set squares

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

What is the vertex form of f(x) = x2 + 6x + 3

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.