Can someone please help me with this

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

1jessica's home town is a mid-sized city experiencing a decline in population. the following graph models the estimated population if the decline continues at the same rate. select the most appropriate unit for the measure of time that the graph represents. a. years b. hours c. days d. weeks

How are sas and sss used to show that two triangles are congruent?