If OA Vector = i vector + j vector and OB vector = 3i vector - j vector, find the value of angle AOB.

Sara needs to take a taxi to get to the movies the taxi charges $4.00 for the first mile and then $2.75 for each mile after that if the total charge is $20.50 then how far was sara’s taxi ride to the movie

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

Stephen thublin invests $1,000,000 in a 45-day certificate of deposit with 6.55% interest. what is the total interest income from the investment?