Pls help me out pls. I need help with these questions really quick.

Its about computing, Macromedia Flash.

To hide gridline when you display or print a worksheet

Quick pl which one of the following is considered a peripheral? a software b mouse c usb connector d motherboard

In excel - calculate the actual increase/decrease from first quarter to the second quarter then subtract subtract first quarter value from second quarter total then divide result by first quarter value