What is 24÷100×897+12-6×777=???

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Ashopper bought a watermelon a pack of napkins and some paper plates in his state there was no tax on food the tax rate on non-food items is 5% the total for the three items he bought was 825 before tags and he paid $0.19 in taxes how much did the watermelon cost

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

Rewrite 9 log, x2 in a form that does not use exponents. 9log, x = log, x