Jack signs up for a credit card that has a apr of 13.99%. use the periodic (monthly) interest rate to calculate how much interest he owes on his unpaid february balance of $345.67?

$3.46

Step-by-step explanation:

Unpaid February balance = $345.67

Annual Percentage Rate(APR) = 13.99 %

                                                  =

                                                  = 0.1399 (converted into decimal)

Periodic (monthly) interest rate =  (since there are 12 months in a year)

                                                    = 0.01

Interest he owes on his unpaid February balance of $345.67

       = Periodic (monthly) interest rate * unpaid February balance

       = 0.01 * 345.67

       = 3.456

       = $3.46     (rounded off to the hundredth place)

↓↓↓↓↓↓↓↓↓

step-by-step explanation:

this is a parabola.