/@HH(FG(HH(d'@xxxxL ? Name__________________________________ Date____________L L L 0 UNIT 15 - Using Formulas to Solve ProblemsL  Study and Reading GuideL L L  1. What is a formula?L L ) 2. Where do formulas come from?L L : 3. How are 'variables' represented in a formula?L L : 4. How are 'constants' represented in a formula?L L W 5. What steps do you need to take to rearrange any formula so that L > the variable you are trying to find is isolated?L L k 6. What do you need to do when a number or a letter is written next to a parentheses?L L P 7. What do you need to know to find the value for an unknown variable?L L < 8. What is the purpose of the Pythagorean formula?