Kristen wrote a number that is equal to three times the difference of 65 and 48. Which expression represents the number that Kristen wrote?

the answer is a) y= 2 csc [0.5 (x+pi/2)]-1

step-by-step explanation:

isn't it a pentagon? sense [3 (triangle) + 4 (rectangle)] - 2 (triangle and rectangle connected) = 5 (pentagon)