exam Maths Puzzle Numerical Ability

Perform the indicated operations:

-4 [6 9] + 5[-2 6]
[-5 7] [3 -5]

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exam Other Question

Solve for x: log(z,8) = -3

Simplify:(( log(5,(log(2,32) ))
Suppose you are starting an office-cleaning service. You have spent $315 on equipment. To clean each office you use $4 worth of supplies. You charge $25 per office. How many offices must you clean to break even?