Help me with these algebra questions please!?

My friend bet me that I can't do these algebra questions, and I can't, but maybe you guys can...I don't call it *****ing because it's not homework, it's just a bet...for no money.1. "Warren is going to use the 26,200 in his saving account to buy a new car. The car he plans to buy costs 24,244.33 plus sales tax, which is 4 1/4%. How much money will Warren have in his account after buying the car and paying the sales tax?2. "Last year, Stepanie was paid a base salary of 12,000 per year plus a commission of 3% on the total dollar value of her sales. She sold 1, 120, 000 worth of company products. How much did she make?3. "This year, Stephanie's new commission rate will be cut to 2.8%, but her base salary will be raised to 14,000 per year. Should Stephanie be concerned? What would the differencein her salary have been if this plan had been placed last year?4. "A auction house earned a comission of 400 grand and the comission rate is 10%. What was the price of the painting?"

1) Approximately $925.29.24,244.33(.0425)=1,030.3824,244.33+1,030.3 8=25,274.7126,200-25,274.71=925.29

yeah right!

Not sure that this is classified as algebra but;1)1. Figure your sales tax (24,244.33 * .0425)2. Add your tax to the car price3. Subtract from your 26,200 and there is your answer2)1. Figure her commission ( 1,120,000 * .03)2. Add 12,000 to your result and there is your answer3)1. Figure her commission again but with the new % (.028)2. Add 14,000 to your result3. Compare to the answer from #2.4. Is she now making more or less? Should she be concerned?4) Not sure this is a complete question.1. 400,000 * .1 (hint, just move your comma once to the left and drop the last 0 for your answer)2. I guess the commission was for the painting???Hope this helps somewhat. Any more questions you can email me directly (admin@rupc.org)