A house is on an 80,000 sq. ft lot. About how many acres is the lot? There are 43.560 square feet in a acre?

Icould really use some with this question.

The product of sin 30 degrees and sin 60 degrees is same as the product of

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?