White as an algebraic expression: the sum of 3 and the product of p and 7

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

What is the definition of exponential decay?

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2