Guadalupe's credit card has an apr of 23%, calculated on the previous
monthly balance, and a minimum payment of 2%, starting the month after the
first purchase. her credit card record for the last 7 months is shown in the
table below.
end of
month
previous
balance
$0.00
$900.00
$899.25
5898.50
5897.75
5897.00
5896 26
new
charges
$900.00
$0.00
$0.00
50.00
$0.00
$0.00
50.00
payment
received
$0.00
$18.00
$17.99
$17.97
$17.96
$17.94
$17 93
finance
charges
$0.00
$17.25
$17.24
$17.22
$17 21
$17 19
$17 18
principal
paid
$0.00
$0.75
$0.75
50.75
$0.75
$0 75
50 75
new
balance
$900.00
$899.25
$898.50
$897.75
$897.00
$896 26
$895 51
vou
how is the new balance calculated?

Acaterer knows he will need 60, 50, 80, 40 and 50 dinner napkins on five successive evenings. he can purchase new napkins initially at 25 cents each, after which he can have dirty napkins laundered by a fast one-day laundry service (i.e., dirty napkins given at the end of the day will be ready for use the following day) at 15 cents each, or by a slow two-day service at 8 cents each or both. the caterer wants to know how many napkins he should purchase initially and how many dirty napkins should be laundered by fast and slow service on each of the days in order to minimize his total costs. formulate the caterer’s problem as a linear program as follows (you must state any assumptions you make): a. define all variables clearly. how many are there? b. write out the constraints that must be satisfied, briefly explaining each. (do not simplify.) write out the objective function to be minimized. (do not simplify.)