Answer:
Total amount paid by Eunice=$1,044
Step-by-step explanation:
Step 1: Determine full price of couch
Full price of couch=$1200
Step 2: Determine tax
Tax=tax rate×full price
where;
tax rate=7%
full price=$1200
replacing;
Tax=(7/100)×1,200=$84
Tax=$84
Step 3: Calculate the sale price
Sale price=Full price-20% discount
where;
Full price=$1,200
discount=(20/100)×1,200=$240
replacing;
Sale price=(1,200-240)=960
Sale price=$960
Step 4: Total amount paid by Eunice
Total amount paid by Eunice=Sale price+tax
where;
Sale price=$960
tax=$84
replacing;
Total amount paid by Eunice=(960+84)=$1,044
Total amount paid by Eunice=$1,044
I believe the correct answer is C.
Answer:
100+90+7
200+20
Step-by-step explanation:
The first derivative of the function f(x) = x² - 5 is equal to f'(x) = 2 · x.
<h3>How to find the derivative of a quadratic equation by definition of derivative</h3>
In this question we have a quadratic function, in which we must make use of the definition of derivative to find the expression of its first derivative. Then, the procedure is shown below:
f(x) = x² - 5 Given
f' = [(x + h)² - 5 - x² + 5] / h Definition of derivative
(x² + 2 · x · h + h² - 5 - x² + 5) / h Perfect square trinomial
(2 · x · h + h²) / h Associative, commutative and modulative properties / Existence of additive inverse
2 · x + h Distributive, commutative and associative properties / Definition of division / Existence of multiplicative inverse
2 · x h = 0 / Result
The first derivative of the function f(x) = x² - 5 is equal to f'(x) = 2 · x.
To learn more on derivatives: brainly.com/question/25324584
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I need those points so bad I don’t know the answer sorry
