Kim is training for a long-distance marathon. Before training, she was able to run one mile in seven minutes. For each of the next three weeks, she improved her time an average of 7 percent over the previous week. What is her time now?

In the given figure ar(adf) =ar(cda) and ar(cdf) = ar(cdf). show that abdc and cdfe are trapeziums.

The volume of a cube is 8 in to the 3rd power. how long is each side?

Saline iv fluid bags cost $64.20 for 24, 1000 ml bags from one supplier. a new supplier sells 500 ml bags for $2 each. the hospital uses about 10,000, 1000 ml bags each month. nurses report that about half of the bags are more than half full when they are discarded. if you are going to use only one supplier, which size bag provides the best deal, and how much will you save each month? compare the cost of the new supplier to the current one.