The value of a is inversely proportional to b when a = 0.5 and b = 3.25. what is the value of a when b = 2? a.4/13 b.13/16 c.13/8 d.13/4

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?

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.

Jorge wants to determine the enlarged dimensions of a digital photo to be used as wallpaper on his computer screen. the original photo was 800 pixels wide by 600 pixels high. the new photo will be 1,260 pixels wide. what will the new height be?