How many positive integers satisfy both inequalities in (a)?

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

How many degrees are there in the central angles in a circle

According to a survey by the beach lifeguards, there is a 25% chance that surfers will see a dolphin while surfing. which simulation could you use to answer questions about whether a surfer will see a dolphin?