Apendulum in an antique clock swings above a tabletop. the number of centimeters, c, that the tip of the pendulum is from the tabletop is a function of time, t, in seconds. the function that models the distance of the tip of the pendulum from the tabletop is c(t) = 2(cos 4πt) + 12. how high is the pendulum when t = 1/4 second.

15. jiovanni is looking in to two different companies that offer study guides for math exams.test prep 101 charges a $5 flat fee and an additional $0.25 per problem.math charges a $2 flat fee and an additional $0.50 per problem.how many prablems would make the costs of the two companies be equal? varibles: equations/eniqualities{ {