ama and baah speent 2 hours weeding a piece of land. ama and christie spent 3 hours weeding that same piece of land. baah and christie spent 4 hours weeding that same piece of land. how long will it take to weed that same piece of land if they work together​

Idont understand math at all! : o( use this scenario to answer the remaining questions: brenton purchased a new bedroom set for $4,500.00. he lives in arizona and pays a 8.75% sales tax. if he made a 50% down payment and financed the rest, what amount did he finance? what is the total sales tax brenton will pay? enter your answer in currency format, round to the nearest cent. what was brenton's total amount financed? enter your answer in currency format, round to the nearest cent.

If f(x) = 3x-2 and g(x) =2x+1 find (f-g)(x)

Leila is buying a dinosaur model. the price of the model is xxx dollars, and she also has to pay a 7\%7%7, percent tax.