Two communications companies offer calling

plans. With Company X, it costs 35¢ to connect

and then 5¢ for each minute. With Company Y,

it costs 15¢ to connect and then 4¢ for each

minute.

Write and simplify an expression that represents

how much more Company X charges than

Company Y, in cents, for n minutes.

(20 + n) ¢

Step-by-step explanation:

With Company X, it costs 35¢ to connect and then 5¢ for each minute.

So, for n minutes of calling the company X charges, C (x) = (35 + 5n) ¢

Again, With Company Y, it costs 15¢ to connect and then 4¢ for each minute.

So, for n minutes of calling the company Y charges, C (y) = (15 + 4n) ¢.

Therefore, the company Y charges for n minutes of calling less than company X is [ (35 + 5n) - (15 + 4n) ]¢ = (20 + n) ¢ (Answer)