A Psychologist Studying the Effects of Good Nutrition on the Behavior

Multiple Choice

A psychologist studying the effects of good nutrition on the behavior of rabbits feeds one group a combination of three foods, I, II, and III. Each of these foods contains three additives, A, B, and C, that are used in the study.
The table below gives the percent of each additive that is present in each food. If the diet being used requires
19) 1 g per day of A, 8.94 g of B, and 14.02 g of C, find the number of grams of food II that should be used each
Day) Let z represent the number of grams of food III. $\begin{array}{l|l|l|l} & \text { Food I| Food II } & \text { Food III } \\\hline \text { Additive A } & 10 \% & 10 \% & 11 \% \\\text { Additive B } & 6 \% & 2 \% & 15 \% \\\text { Additive C } & 8 \% & 6 \% & 13 \%\end{array}$

A) $2.7 \mathrm { z } - 60$
B) $1.8 z + 54$
C) $128 - 3.2 \mathrm { z }$
D) $2.1 z + 63$