How would i go about finding out how long it would take $10,000 to grow into 11,400 if the deposit earned 7% simple interest a year?

Find the area of the triangle shown 3 by 6

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?

The mean of 10 values is 19. if further 5 values areincluded the mean becomes 20. what is the meanthese five additional values? a) 10b) 15c) 11d) 22