Hi whats the answer to this? how many solutions does this graph have

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

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?