4. The members of a photographic club decide to buy a digital camera that cost R10 000 and they intend to share the cost equally amongst all the members. a) If there are x members in the club, write down an expression in terms of x for the amount that each member must pay. b) Write down an expression in terms of x for the amount that each member will pay if five additional members join the club. c) The club worked out that each member will pay R100 less if there are five additional members. Form an equation in x and hence calculate how many members were in the club. ​