Customers of a phone company can choose between two service plans for long distance calls. the first plan has no monthly fee but charges for each minute of calls. the second plan has a monthly fee and charges an additional for each minute of calls. for how many minutes of calls will the costs of the two plans be equal?

\\x= P/(c -d)[/tex],

Assume that the price of each minute in the first plan is $c and that the second plan charges a flat rate of $P and a charge  of additional $d for every minute.

Step-by-step explanation

Assume that the price of each minute in the first plan is $c and that the second plan charges a flat rate of $P and a charge  of additional $d for every minute.

Thus, the monthly cost of a customer who consumes x minutes in each plan is:

For the first plan:

and for the second plan:

Considering that the monthly costs must be the same in each plan, you have to:

\\x= P/(c -d)" alt="c - d" />

\\x= P/(c -d)" />.

For example if , Then the number of minutes would be,  and the total cost for each plan would be

$18 was the price of the t-shirt

step-by-step explanation:

$655.61 which is option c

step-by-step explanation:

price of house =   $146,000

initial rate = 3.5%

mortgaged paid in this = 3.5 % of $146,000

                                        =

                                        =$5110

the total years would be = 7

total mortgaged paid = 7 * $5110

                                      =$35770

remaining money = $146000-35770

                                =$110230

new mortgaged payment = 5 % of 110230

                                            =  

                                            =$655.61