Answer:
28%
Step-by-step explanation:
-The price after the coupon discount is calculated as;
We reduce the discounted price by the service fee to determine the effective purchase price:
#Compare this final price to the original price:
Hence, the final price was 28% less than the original price.
Answer:
Step-by-step explanation:
<u>Equation of a Polynomial</u>
Given the roots x1, x2, and x3 of a cubic polynomial, the equation can be written as:
Where a is the leading coefficient.
We know the three roots of the polynomial -6, -3, and 1, thus:
Since the y-intercept of the polynomial is y=90 when x=0:
90=a(0+6)(0+3)(0-1)
90=a(6)(3)(-1)=-18a
Thus
a = 90/(-18) = -5
The polynomial is:
We must write it in standard form, so we have to multiply all of the factors as follows: