Step-by-step explanation:
The rule for a 90 degree counterclockwise is
(x,y) -> (-y,x)
so
C(-1,2) -> C'(-2,-1)
D(3,5) -> D'(-5,3)
E(1,2) -> E'(-2,1)
(x-4)(x+1)
you’re welcome!
S(8)=((100×(1−(50÷100)^(8))÷(1−50÷100)))
=199.22
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