y variable you like.) uying to find. (Most people choo Write down what the variable represents. Re-read the problem and write an equation for the quantities given in the problem. No some problems require several equations, we call this a "system" of equations. Solve the equation (or system of equations) 5. Answer the question in the problem. Just because you found an answer to your equation does not necessarily mean you are finished with the problem. Many tin you will need to take the answer you get from the equation and use it in some other v to answer the question originally given in the problem. Check your solution. Your answer should not only make sense logically, but it shou also make the equation true. If you are asked for a time value and end up with a nega number, this should indicate that you've made an error somewhere. mples: The formula I = prt calculates simple interest earned from investing p dollars at ual interest rate of r, for a period of t years. Write equations for the following problems 1. Mason invests $5000 at 4% simple interest for 3 years. 2. Caleb earns $500 in interest from investing some money at 12% simple interest for years