13.3 Use Formulas (p.294-297)

I. A formula is a rule or principle used to find a value: i.e. area, perimeter, volume, etc…
II. Use properties of equations to solve for the variable in a formula
III. Useful formulas:
Converting between Fahrenheit and Celsius :
F = (9/5 x C)+32
C = 5/9 x (F-32)
Average Speed: d = rt (distance equals rate times time)