Which algebraic expression correctly translates the phrase "3 less than t"?

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

A student earned s points on a quiz. For the semester, quizzes count for $20\%$ of the grade, and the student wants to calculate the quiz contribution to the semester grade as a percentage: "twenty percent of the quiz total, $s$." Which algebraic expression represents that contribution?

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.

Consider the following phrase: "a number decreased by the difference of 6 and x." Which algebraic expression accurately represents this phrase?