PLEASE HELP! this is due today!

1.)k+2x  2.)54  3.) i think is n+n=145

Step-by-step explanation:

For question 9 = 54

Step-by-step explanation:

54 + 67 = 121

67 - 54 = 13

With the new ratio

3 maple trees for every 11 oak trees

132 oak trees (11*12=132)
3*12 = 36 maple trees

36 maple trees plus 132 oak trees = 168 total trees

since your original ratio was 9:5 that means  9/14 of the trees were maple; so set up a proportion to find the number of trees that were maple before the bugs
cross multiply
14x = 1512
x= 108 maple trees before there were bugs

Finally do 108 - 36 (maple trees before, minus, maple trees after)

difference = 78 maple trees