What does statement mean when finding proof?

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

Fa bus driver leaves her first stop by 7: 00 a.m., her route will take less than 37 minutes. if she leaves after 7: 00 a.m., she estimates that the same route will take no less than 42 minutes. which inequality represents the time it takes to drive the route, r?

Look at the chart showing the results of a baseball player at bat. which is the probability of getting a hit?