I think the answer is A i’m sorry if it’s wrong i’m not for sure.
4 because if u where to fold it
Today: x=19
y=67+19=86
9 years ago: x=19-9=10
y=86-9=77
The total age 9 years ago: x+y=10+77=87
Answer:6.25
Step-by-step explanation : ratio of areas = one half :two point five in a half
=1.0:6.25
X in (-oo:+oo)
((5/14)*x^7)/30 = 0
1/84*x^7 = 0 // : 1/84
x^7 = 0
x = 0
x = 0
