exam Maths Puzzle Numerical Ability

write the expression a a complex number in stsandard form.
(2-6i)-(-10+4i)

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exam Other Question

Can anyone help me to the inequality represented by the graph??

<-- -20-- -10--0---10---*20---30---40-->

Kia Acme Communication finds that the total revenue function associated with producing a new type of cell phone is R(X)=218X-X^2, AND THE TOTAL COST FUNCTION IS C(x)=6000+9x, where x r