A county fair has different ticket prices for adults and children. The expression 6a + 5c represents the total cost in dollars of tickets for a adults and c children. The Patel family spends $38 on tickets. How many adult tickets and child tickets do they buy?

1. writing an equation for an exponential function by 2. a piece of paper that is 0.6 millimeter thick is folded. write an equation for the thickness t of the paper in millimeters as a function of the number n of folds. the equation is t(n)= 3. enter an equation for the function that includes the points. (-2, 2/5) and (-1,2)