We have,

Introduce variable
such that 
The sum
is therefore 
So,
(sadia's age)
(father's age)
Hope this helps :)
Answer:
The first one is the second option
The second one is the 2 and 4 options
Step-by-step explanation:
It’s right on ed
Answer: y = 1/5x+5
Step-by-step explanation: Slope intercept form is y = mx+b, where m is the slope, and b is the y intercept. Substitute accordingly.
Answer:
Step-by-step explanation:
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