Rectangular garden 300 ft x 250 ft. how much wire should i buy?

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes.she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?

Find the axis of symmerty for x y=x squared -4x-8