If x is the # ounces attached, then you need
3 + 0.2x = 9
a spring is 3 in. long with no weight suspended from it. For each ounce of weight, the spring stretches 0.2 in. Unitl it reaches its maximum lenght of 9 in. How much weight must be added for the spring to reach its maximum length? algebra
2 answers
x=30