A sequence is defined by the recursive function f(n + 1) = one-halff(n). If f(3) = 9 , what is f(1) ? 1 3 27 81

Two streets intersect at a 30- degree angle. at the intersection, the are four crosswalks formed that are the same length. what type of quadrilateral is formed by the crosswalks?

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

Evaluate cos2θ for cosθ = square root of 3/2