Answer:
Total amount to be paid = $655
Step-by-step explanation:
Given,
Total price before coupon is = 261.36 +381.25+77.52
= $720.13
Discount = 15%
Amount of discount = 15% of total amount
Amount of discount = 
= $108.02
Remaining amount = Total amount - discount amount
Remaining amount = $720.13 - $108.02
= $612.11
Sales tax = 6%
Amount of sales tax = 6% of remaining amount

Amount to be paid = Remaining amount + sales tax
= 612.11 + 42.85
= 654.96
Rounding off to nearest whole number;
Total amount to be paid = $655
Answer:
The system of equations are:

CDs sold this week is 26 and that of last week is 84.
Step-by-step explanation:
Let the number of CDs sold this week be
and last week be 
Given:
CDs sold last week = 6 more than 3 times she sold this week
∴
------------- 1
Also, total number of CDs sold are 110.
∴
------------ 2
Therefore, the above two equations are systems of equations that can be used to find the number of CDs she sold last week and the number of CDs she sold this week.
Now, in order to solve, we plug in the value of
from equation (1) in equation (2). This gives,

Now, 
Therefore, the number of CDs sold this week is 26 and last week is 84.
f is given as -3
-3 is greater than -4, so use the second equation 3x-5.
replace x with -3 and calculate:
3(-3) - 5 = -9 - 5 = -14
The answer is -14.
Step-by-step explanation:
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