3b + a2
Please help!!!

What is negative 3/9 times negative 2/8 ?

Solve for x where 0 equation: cot^2x+2cotx+1=0

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?