A. -14x+21
because -7 times 2x is -14x and -7 times -3 is 21
You dived by the bottom fraction and once again. dived by 12 because ft to inches 12 and you know the order of numbers hope this helps!
A is one solution
Sorry this is all I could I help you with good luck
Y to the 4th power times x to the fourth power
