PLEASE HELP Which equation represents a function that is nonlinear?

y = 5x
y = 37
y = x*2 - 25
y = 2/3x + 67

Amaple syrup producer records th amount of sap collected from each of his trees. the line plot shows the results for one day. what is the least amount of sap any one tree produced?

Find dy/dx using implicit differentiation ln(20+e^xy)=y

Someone answer asap for ! the following statements are true about the coins calvin and sasha have collected. * calvin and sasha has the same amount of money. * calvin has only quarters. * sasha has dimes, nickels, and pennies * calvin has the same number of quarters as sasha has dimes. * sasha has $1.95 in coins that are not dimes. exactly how many quarters does calvin have?