Please find the needed info on the following purchases

1. Mary Farmer purchased school supplies for $33.62, an atlas for $23.95, and a CD for $13.78 at Books Express. For all purchases she must pay the state tax of 7.5 percent and the county tax of 0.5 percent. What is the tax on her purchase? 2. Martin Pincher purchased a snow shovel for $28.61, a winter coat for $23.27, and some rock salt for $7.96. He must pay the state tax of 5 percent, the county tax of 0.5 percent and the city tax of 2.5 percent. What is the total purchase price? 3. Duke Edwards purchased six quarts of orange juice for $13.10. Find the unit price per quart rounded to the nearest cent. 4. Dennis Anderson purchased four gallons of milk for $11.67. Find the unit price per gallon rounded to the nearest cent. 5. Rhea Franken can buy one dozen cookies for $5.65, two dozen for $11.30, or three dozen for $16.95. Which is the best buy? 6. Marta Sanchez purchased a sweater for $15.67, a pair of socks for @2.13, and a bracelet for $6.78. For all purchases she must pay the state sales tax of 7.5 percent and the county tax of 0.5 percent. What is the tax on her purchases? 7. Heather Johnson bought a new set of tires for $436.00 and a car seat for $22.85. The state tax is 6 percent, the county tax rate is 1.5 percent, and the city tax rate is 0.5 percent. What is the total purchase price