Problem
The formula \( W=0.86 g^{2}-0.01 g+5.9 \) models the weight, \( W \), in ounces, for a cat who is fed \( g \) rams per day of a special food. According to the formula, how much will a cat weigh when it is fe 3 grams of the special food per day? Round to the nearest hundredth.
Solution
Step 1 ：\(W = 0.86(3)^{2} - 0.01(3) + 5.9\)
Step 2 ：\(W = 0.86(9) - 0.03 + 5.9\)
Step 3 ：\(W = 7.74 - 0.03 + 5.9\)
Step 4 ：\(W = 13.61\)
