exam Maths Puzzle Numerical Ability

I need help with this problem. Find the value of x: log base x 169/9=2
Thank you for your help.

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exam Other Question

The revenue for a sandwich shop is directly proportional to its advertising budget. When the owner spent $2000 a month on advertising, the revenue was $120,000. If the revenue is now $180,000, how much is the owner spending on advertising? CAN SOMEONE PLEASE HELP ME WITH THIS PROBLEM:

FIND THE DISTANCE BETWEEN THE PAIR OF POINTS.
(-2,-6) and (7,-3)