levicorey846
05.11.2020 •
Mathematics
For this item, complete the choice matrix by clicking the appropriate answer in each row.
A customer buys an item that originally costs x dollars from a retail store and uses a $10.00 off coupon. The store clerk uses the function C(x)=1.06(x−10) to calculate the final cost of the customer’s item.
Determine whether each statement about C(30) is true or false.
True
False
The value of C(30) is 20.
True – The value of C ( 30 ) is 20 .
False – The value of C ( 30 ) is 20 .
The value of C(30) is 21.2.
True – The value of C ( 30 ) is 21.2 .
False – The value of C ( 30 ) is 21.2 .
The value of C(30) represents the final cost of an item with an original cost of $30.
True – The value of C ( 30 ) represents the final cost of an item with an original cost of $ 30 .
False – The value of C ( 30 ) represents the final cost of an item with an original cost of $ 30 .
The value of C(30) represents the original cost of an item with a final cost of $30.
True – The value of C ( 30 ) represents the original cost of an item with a final cost of $ 30 .
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Ответ:
(-6,0),(6,0) aka n=-6,6
Step-by-step explanation:
plugged it into desmos and got (-6,0),(6,0)
aka n=-6,6 but we need to find the right one so we plug each one in.
-1/2(-6)^2+18=0 PEMDAS
-1/2(36)+18=0
-18+18=0
0=0 True
-1/2(6)^2+18=0
-1/2(36)+18=0
-18+18=0
0=0 True
they both work man idk what to tell ya. if it cant be both i would try 6 first.
btw desmos is a really awesome graphing calculator online. its great to be able to visualize equations.