Lena purchased a prepaid phone card for $20. long distance calls cost 21 cents a minute using this card. lena used her card only once to make a long distance
call. if the remaining credit on her card is $12.23, how many minutes did her call last?

Step-by-step explanation:

Since she used  $ 7.77

for her only call and since one call costs  $0.21 per minute, you you can compute number of minutes she spent for her last call.

How did we find $7.77:

$20-$12.23= $7.77

Now, $7.77 : $0.21= 37 minutes

Her call lasted 37 minutes

the answer is: the length is 5/6 yards.

give me a or a 5 star rating if this is correct!

step-by-step explanation:

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart