Acell phone service provider offers two plans. plan a includes a fee of $25 per month and charges $0.25 for every call. plan b includes a fee of $40 per month and offers unlimited calls. for what number of phone calls is the cost of plan b less than the cost of plan a? more than 160 calls more than 120 calls more than 100 calls more than 60 calls

First of all calm down and brake down the problem plan a is $25 a month while the other one is $40 you need to subtract to get $15 than divide $15 by $0.25 which you will get 60 but this is not the right answer because its asking you how many phone calls is the cost of plan b less than the cost of plan a so the answer is 59 calls.

 a line is perpendicular to a plane, then it is perpendicular to all lines in the plane.If separate planes contain skew lines, the planes are parallel. The union of twoplanes is an angle. Two intersecting lines can lie in more than one plane.