exam Maths Puzzle Numerical Ability

please help to solve for x. 9^x=1/3

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exam Other Question

The maximum value of z = 20x + 8y subject to:

3x + y ≤ 24
6x + 4y ≤ 66
x ≥ 0, y ≥ 0

a. 220
b. 160
c. 172
d. 132 Solve the inequality 2|x-10|less than sign 3, and express the solution as an interval. Thank you!