Simplify the following expression: -8x-18

Abbey purchased a house using a fixed rate mortgage. the annual interest rate is 4.2% compounded monthly for 20 years. the mortgage amount is $235,000. what is the monthly payment on the mortgage? this isn't a multiple choice question have to show my work

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

Are the corresponding angles congruent? explain why or why not.