Given the following:

29 day billing cycle
4/17 billing date previous balance $1,100
4/27 payment 700
4/29 charge 300
5/7 payment 60

the average daily balance is:
$910.34
$755.17
$810.43
$755.71
none of these

4/17 Billing date previous balance $1,100
4/27 Payment 700
4/29 Charge 300
5/7 Payment 60

 Day      action                balance       # of days with that balance

4/17                                     1,100          from 4/17 to 4/26 = 10 days

4/27     payment 700          400           from 4/26 to 4/28 = 2 days 

4/29     charge 300             100            from 4/29 to 4/7 = 8 days

5/7      charge                       60            from 5/7 to 5/16 = 9 days

5/16     none                         -                -

Weighted average: [1,100*10 + 400*2 + 100*8 + 60*9] / 29 = 13140 / 29 = 435.10

435.10

sine

step-by-step explanation:

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.