A telephone call costs c cents for the first 3 minutes and m cents for each additional minute. Which expression represents the cost, in cents, of a 6-minute call?

Step-by-step explanation:

Given

A telephone call costs c cents for first 3 minutes and m cents for each additional minute.

Any call beyond 3 minutes costs

where t is the minutes spent beyond 3 minutes

For 6 minutes , t is 3

thus, it can be written

step-by-step explanation:

so first find out how much each is worth.

quarter= 25 cents

dime= 10 cents

pennies= 1 cent

then multiply each by how much each is worth.

200                     150                   300

x                         x                     x   1

  25                       10              

                                  300

1000                     1500

+                          

4000                                      

5000                                  

then count 2 from the back and add a period.

$50.00

$15.00

$3.00

and then add them

  $50.00

+

  $15.00

+

    $3.00

$68.00

so sunghee has $68.00

read more on -

i used to know but i learned it a long time ago sorry

step-by-step explanation: