write and simplify the rational expression anybody help me following problems?

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aruna g

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1) write and simplify the rational expression that represents the probability of randomly hitting the unshaded region of the rectangle

out side rectangle dimensions l = (5x +4) w = (x+5)
inside shaded rectangle dimensions l = (x+5) w = (x+3)


2) a spanish club is planning a bus trip to a spanish restaurant. the cost per person for the bus rental varies inversely with the number of people going on the trip. it will cost $22 per person if 30 people go on the trip. how much will it cost per person if 78 people go on the trip ? round your answer to the nearst cent

3) divide (a^3 + 64) / (a +4)

4) divide - 2x^2 + 3 x^3 + 4 + 5x by 3x +1
 
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