Kendall's credit card has an APR of 29%, calculated on the previous monthly
balance. His credit card record for the last 7 months is shown in the table
below.
End of Previous New Payment Finance Principal N ew
month balance charges received charges
paid balance
$0.00 $188.00 $0.00 $0.00 $0.00 $188.00
S188.00 $105.00 S297.54 $4.54 $293.00 $0.00
50.00 $73.00 $27.34 $0.00 $27.34 $45.66
$45.66 $278.00 $48.11 $1.10 $47.01 $276.66
$276.66 $21.00
$6.69 $136.29 $161.36
$161.36 $ 193.00 $32.99 $3.90 $29.09 $325.27
$325 27 $344.00 $22.94 $7.86 $15.08
What is the new balance at the end of month 7?
O
O A. $297.54
O B. $654.19
O C. $0
O D. $325.37
PREVIOUS

i think its B

Step-by-step explanation:

try to make the q more simple

let's add {f(x)=x+1}f(x)=x+1 and {g(x)=2x}g(x)=2x together to make a new function.

f(x)+g(x) =(x+1)+(2x)=x+1+2x=3x+1

let's call this new function hh. so we have:

{h(x)}={f(x)}+{g(x)}{=3x+1}h(x)=f(x)+g(x)=3x+1

we can also evaluate combined functions for particular inputs. let's evaluate function hh above for x=2x=2. below are two ways of doing this.

method 1: substitute x=2x=2 into the combined function hh.

h(x)

h(2)

​    

=3x+1

=3(2)+1

=7

​ since h(x)=f(x)+g(x)h(x)=f(x)+g(x), we can also find h(2)h(2) by finding f(2) +g(2)f(2)+g(2).

first, let's find f(2)f(2):

f(x)

f(2)

​    

=x+1

=2+1

=3

​  

now, let's find g(2)g(2):

g(x)

g(2)

​    

=2x

=2⋅2

=4

​  

so f(2)+g(2)=3+4=\greend7f(2)+g(2)=3+4=7.

notice that substituting x =2x=2 directly into function hh and finding f(2) + g(2)f(2)+g(2) gave us the same answer!