[Solved] Justus is reading an erotic story in a men's magazine when he finds his respiration rate and heart rate increasing. He is also experiencing penile erection. Which phase is Justus experiencing based on the phases described by Masters and Johnson? A)orgasmic B)excitement C)resolution D)plateau Expression: In mathematics, an expression is a combination of symbols that represent a value or the relationship between values. X: Often used to denote an independent variable or an unknown value in equations and functions. Polynomial: An algebraic expression consisting of terms in the form of ax^n where a is the coefficient, x is the variable, and n is a non-negative integer. Monomial: An algebraic expression consisting of a single term, which can be a constant, a variable, or multiples of variables and constants.