Answer:
He spent 16 dollars on his sisters gift.
Step-by-step explanation:
You can do 320 x .05 which will equal 16.
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Remove the parentheses
x^3-9x^2+27x-27-x^3+3x^2-3x+1+7x^2=21x-28
x^2+24x-26=21x-28
x^2+24x-26-21x+28=0
x^2+3x+2=0
factor the expression
(x+2)(x+1)=0
sooo x1=-2 x2=-1
The answer is segment because a line segment is an undefined term also t can be identified only if it lies on a plane and has 1 point and 1 endpoint
CATERING TOTAL COST F(X) = 10X + 300
TOTAL REQUIRED 14X
10X + 300 = 14X
10X - 14X = -300
-4X = -300
4X = 300
X= 300/4
X=75 <------------------SOLUTION