What is the corresponding definition of expression ??

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41