exam Maths Puzzle Numerical Ability

Having problems simplifying (-R2/R2CS+1)/R1. Any assistance in the explanation would be greatly appreciated.

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exam Other Question

3) Suppose a baseball is shot up from the ground straight up with an initial velocity of 32 feet per second. A function can be created by expressing distance above the ground, s, can you help me with this problem please:

using the digits from 0 through 9, arrange them in fraction form to produce a sum of 1.

thank you very much i really need your help.