Put the following equation of line into slope intercept form simplifying all fractions y-6x=9

Acircle has a circumference of 28.36 units what is the diameter of the circle

Is there an x intercept in the equation 60*1.15^x

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?