The students in the music club sold tickets to their spring concert. The table shows the amount if money raised and the number if tickets sold by each of four students. What is the constant of proportionality for the sales

Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. she also earns a base salary of $750 per week. what were her sales last week if her total earnings for the week were $1,076.25?

Me. i can't figure out this question. give an explanation too. .

Order the measurements from the least to the greatest. 2,720 ml , 24.91 l , 0.0268 kl