What exactly backend developers do ?
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Ihave 25$ on an itunes card and i need to buy spotify premium, i have no other payment method.

Raveena is making a professional presentation for a newly launched product of her company. she wants to incorporate the following features in her presentation. a) to add serial numbers in each slide b) to add name of her company on top of each slide. c) to add the picture of her product on the second slide(the picture of her product is stored on her computer) write the commands/features of her presentation tool using which she can perform the above operations.

Someone wishes to run the software on another computer system that runs an operating system that does not support the software what can he do