Please help, I and I also need a thorough explanation, I don't understand this

See below ↓

Step-by-step explanation:

Solve for x.

2.1.1

2.1.2

2.1.3

I can only answer 3 questions together at maximum so kindly post the rest of your questions 3 at a time separately.

Hope this helped~

days of the week

step-by-step explanation:

javier earned more money then kyle, so that won't always be a constant term, but the days of the week do not change so that term is always constant.

edit: i meant

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.