Asmall class has 10 students 3 of whom are girls and 7 of whom are boys. the teacher is going to choose two of the students at random. what is the probibility that the teacher will choose two girls? write your answer as a fraction in simplest form.

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)