Scores on a geometry test have average of 80 with standard deviation of 5. what is the z-score for a student who earned a 85 on the test? round your answer to the nearest thousandth.

Miguel bought a movie ticket that cost $5. he also bought popcorn and a bottle of water. how much did miguel spend altogether?

It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?

Which expression is rational? 6. , square root two, square root 14, square root 49