Answer:
The expression for the given discount on item is 74 - [0.4 × 74 + 1.07 × 74]
Step-by-step explanation:
Given as :
The market price of item = m.p = $74
The discount percentage on item = 40%
The sale tax added = 7%
The selling price = s.p = $74 + 7% of $74
I.e s.p = 1.07 × 74
<u>Now, from discount </u>
d % = 
Or, 40% = 
Or, 0.4 = 1 - 
Or, 0.4 × 74 = ( 74 ) - (1.07 × 74)
Or, 74 - (1.07 × 74) - 0.4 × 74 = 0
Or, 74 - 74 (1.07 + 0.4) = 0
Or, 74 - [0.4 × 74 + 1.07 × 74] = 0
Hence, The expression for the given discount on item is 74 - [0.4 × 74 + 1.07 × 74] . Answer
The 80% of 50 is 40$
So the sale is 20% which is 10$
Answer:
<h2> $9</h2>
Step-by-step explanation:
<h2>
f(x) = - 25 ( x - 9 )² + 200</h2>
<em>when</em><em> </em>x = 5 ,
f(5) = - 25 ( 5 - 9 )² + 200 = - 200
<em>when</em><em> </em>x = 9 ,
f(9) = - 25 ( 9 - 9 )² + 200 = 200
<em>when </em>x = 10 ,
f(10) = - 25 ( 10 - 9 )² + 200 = 175
<em>when</em><em> </em>x = 15 ,
f(15) = - 25 ( 15 - 9 )² + 200 = -700
∴ when <u>price = $9</u>
the company receive the maximum profit