**A sum of $4000 invested for four years and the interest rate was compounded quarterly. If the sum amounted to $4588.33 after the given time, what is the interest rate?
**Two cities, lie on the same meridian, one is found at 20 degrees S and the other 27 degrees S. Find the distance between these cities with a circumference of the earth of 3960 miles.|||Second Question:
Create a ratio:
7 (degrees between cities) x (miles between cities)
--------------------------------------鈥? = ----------------------------------------鈥?
180 (degrees in entire world) 3,960 (miles around entire world)
Cross multiply: 180x= 27,720
Divide both sides by 180: x=154.
Cities are 154 miles apart
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