The price of the shopkin should be smaller or or equal
Solution: Should not be more than 4
Answer: <4
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Answer:
see in the picture, the perimeter of this rectangle is
2( x + 3x) = 8x but the perimeter is 65.6
=> 8x = 65.6
<=> x = 65.6/8
=> x = 8.2
We start with the more complicated side which is the left side, and show that, on using some trigonometric identities, we will get the term on the right side .

Using Quotient identity for tangent function, we will get


Taking out sine function from the numerator

Cancelling the common term of numerator and denominator

Answer:
Because i have no more information i assume you would like it to be solved.
x < -1 or -1/3 < x < 1