The vertex angle of an isosceles triangle measure 40.whats the measure of the base angle?

Icould really use some with this question.

James is playing his favorite game at the arcade. after playing the game 3 times, he has 8 tokens remaining. he initially had 20 tokens, and the game costs the same number of tokens each time. the number t of tokens james has is a function of g, the number of games he plays. write the function’s formula? t=

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?