Please hurry I’m taking a test I need help What ratio is equivalent to 20:14

You are on a cycling trip around europe with friends. you check the weather forecast for the first week. these are the temperatures for the week. sun mon tues wed thurs fri sat 16°c 20°c 24°c 28°c 28°c 23°c 15°c what is the mean temperature forecast for the week?

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.

Which graph represents the parent function of y=(x+2)(x-2)