exam Maths Puzzle Numerical Ability

I had asked my teacher for help and she gave me none! Please help.

(Type of problem: Linear Programming in Two Variables, Operation Research, Simplex Method)
x sub1=bread and

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exam Other Question

The instructions are as follows:

Simplify. 7 is outside of the square root and 245 is inside the square root.

Please show the step by step process. Thank you for your help on this one. A wall of the basement is 32 feet by 8 feet. The wall is to be constructed with masonry blocks that have lengths of 16 inches and widths of 8 inches. About how many masonry blocks are needed to build the wall?