A because if you use T3 it wouldn’t have make sense so only reasonable and solution that works is A
Answer:
Daughter age = 3 years
Step-by-step explanation:
Let x be the age of the women and y be the age of the daughter.
Given:
After five year the sum of the women and daughter age = 40

At present the sum of the women and daughter age



--------------(1)
So the sum of the present age is 
The difference in their present age is 24 years.


Now we substitute x value in equation 1.






Therefore, the daughter age is 3 years.
The third one down
Because the best line of fit is a line that goes between the plotted points and it HAS to be a straight line and most of the points close to the line
X=$20/$4
x=5 gallons
x is the amount of gallons.
1 gallon=32 miles
5 gallons=160 miles
Margie can drive 160 miles on $20 of gas
5t=3b+660....and....2t+5B=450
from the first we can see that the t=(3b+650)/5 and using this value in the second.
(6+1320)/5+5b=450 making all have common denominator.
6b+1320+25b=2250
31b=930
b=30.. and 2t+5b=450
t=150