Answer:
m=84
r:m = 1:7
therefore when r= 1 then M=14

I think that's how you do it
Answer:
10y+5n+3/6 im not too sure but I think its correct
btw envision gives you a try again
Answer:
2x^1+1
Step-by-step explanation:
Area=L X W
which means that (14x^4+7x^2) needs to be divided by 7x^2
factorise(14x^4+7x^2) which gives 7x(2x^2+1)
divide 7x(2x^2+1) by 7x^2
gives 2x^2 +1