Tell me how to solve and what the answer is.

In the equation sqrt(n+5)-sqrt(11-10)=1. what is the value of n

Jackson earns $25 per hour as a tutor at the college library. he set a weekly spending budget of $130 each week and puts the remaining money in his savings account. how many hours must he work this week to have at least an extra $50 to put in his savings account

If bradley saves for 4 weeks, what is the total amount of money he will have saved?