Which equation shows the quadratic formula used correctly to solve 7x^2=9+x?

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)

Micheal is 4 times as old as brandon and is also 27 years older than brandon. how old is micheal

What is the gcf of 20c^3-5c^4+30c^6