2. A cell phone company charges a $27.95 monthly fee and $0.12 per minute for local calls. Another company charges $12.95 a month and
$0.32 per minute for local calls. For what number of minutes of local
calls are the costs of the plans the same?
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Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters

What percent of 18 is 24? and plz explain thx.

(c) a vine called the mile-a-minute weed is known for growing at a very fast rate. it can grow up to 0.5 ft per day. how fast in inches per hour can the mile-a-minute weed grow up to? show your work using the correct conversion factors.