99 points plus brainiest answer.
1. mark estimates that the distance from his house to his school is 15.5 mi. the actual distance is 14.5 mi.

to the nearest tenth of a percent, what is the percent error in mark's estimate?

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2. the price of a wallet is $31.95 and the sales tax is 7.5%.

what is the total cost of the wallet?

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3. a sneaker store salesman had $4,125 in total monthly sales last month. he made $165 in commission from those sales.

what is the salesman's commission as a percent of his total monthly sales?

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4. the picture below.