Algebra 1 help please what is correct?

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)

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?

Write the expression as a single natural logarithm. 2 in a - 4 in y