What is the answer to this question (7 x 6) x 26a

Is a deceasing linear model or an exponential decay model likely to be a better fit for the data about remembering? ?

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

You decide instead to take the train there. the train will take 135 minutes. convert this into hours and minutes.