Hello :
13π/4 = (16-3)π/4
= 16π/4 -3π/4
13π/4 = -3π/4 +4π
tan( 13π/4) = tan ( -3π/4)= - tan ( 3π/4) =- tan( π - π/4) = - tan(- π/4)
tan( 13π/4) = -(-tan(π/4)) =tan(π/4)=1
The answer is dividing each bottle size by its cost I took the test and I got it right <span>
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Answer C. The pattern is that each number in sequence 1 is being doubled to get the number in sequence 2, and 40*2=80
