Which graph has a proportional relationship and which one does not help please ?

Atest consists of 10 multiple choice questions, each with 5 possible answers, one of which is correct. to pass the test a student must get 60% or better on the test. if a student randomly guesses, what is the probability that the student will pass the test?

Which of the following shows the graph of y=2e^x?

Hurry can a triangle can be constructed with angles measuring 115°,55°, and 20°? yes or no