In the verbal description 'the expression 3x + 4 represents 3 multiplied by an unknown number plus 4', which are the variable, coefficient, and constant term, respectively?

Translate the phrase "seven more than a number" into an algebraic expression using a variable n.

Translate "twice the sum of a number n and 5" into an algebraic expression using parentheses and a coefficient.

A traveler has b dollars. They spend 120 dollars on a hotel and then use one-third of the remaining money for food. Represent the amount spent on food as an algebraic expression in terms of b.

Translate and simplify the following phrase into a single algebraic expression: "seven more than twice the sum of a and b".