Which table of ordered pairs represents a proportional relationship?

Help ASAP please!

What is 32+4 x (16 x 1/2) -2 show your work}

Suppose you want just guess at the answers in a 5 question multiple-choice test. each question has 3 responses and only one is correct. what is the probability of getting two questions right just guessing? 20 points 0.3275 0.2753 0.7532 none of the above

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68