Arrange the amount of foodstuffs bought for each week and the prices using suitable arrays and use them to determine which school spent most in the first two weeks.

Here's a step-by-step solution to the problem.

Part (a): Arrange the amount of foodstuffs bought for each week and the prices using suitable arrays and use them to determine which school spent most in the first two weeks.

Step 1: Represent the weekly supplies as matrices.
Let the rows represent the schools (Ntungamo Girls Ss, Ntungamo High Sch, Trust Public Ss) and the columns represent the foodstuffs (Posho, Rice, Cassava). We assume 0 for foodstuffs not explicitly mentioned.

• Week 1 Supply Matrix ($S_1$): Ntungamo Girls Ss: 3 Posho, 1 Rice, 3 Cassava Ntungamo High Sch: 2 Posho,