What is the coefficient of the x5y5-term in the binomial expansion of (2x – 3y)10?

Which rule describes the composition of transformations that maps △abc to △a”b”c

Will mark ! (10 points also! ) if x varies inversely with y and x =6 when y= 10, find y when x=8 a. y=4.8 b. y=7.5 c. y=40/3 d. y=4/15

Drawing it out would be best can you me