(7/2)^36 = 38587762477395204358.3125251694727922
atan(2) = 1.107148717794
atan(2)=63.434948822922
280/9 = 31.1111111111111111
http://www.cymath.com/answer.php?q=x%2B(3%2Fx)%3D-4
f(x)=107.8x+1245.5
f(11)=107.8*11+1245.5=2431.3
http://www.cymath.com/answer.php?q=9%20(2x%20-%203y)
http://www.cymath.com/answer.php?q=-8%2F9%20*%201%203%2F4
60 (degrees)
http://www.cymath.com/answer.php?q=28%3Dk(56)%2F4
i think my equation is wrong but answer need to be right
