Which algebraic expression represents this word description? The product of nine and the difference between five and a number

If the tip varies directly with the number of guest which equation represents between the tip, t, and the number of guest, g?

Examine this system of equations. what integer should the second equation be multiplied by so that when the two equations are added together, the x term is eliminated? 3/4x+1/7y=6 1/8x-3/5y=16

Student representatives surveyed their classmates on their preference of a school mascot for a new school. the results are shown in the table below. which pair of samples seems most representative of student preference?