ms. Patel purchased some pliers, wrenches, and chisel for her shop. she bought twice as many pliers that cost $17.50 each a wrenches that cost $21.50 each. she bought 3 fewer chisel sets than pliers. how many of each tool did ms. Patel buy if she paid a total of $141 and the price of each chisel set is $28?

Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false

At the electronics store you have a coupon for 20% off up to 2 cds you buy for cds with the original cost of $10.99 each the sales tax is 5% what is the total cost of your purchase

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.