Bob is three times as old as mary. four years from now, bobwill be only twice as old as mary. find their present ages.

the answer is c.

for continuous functions, they continue in the same pattern and you have to find that pattern kinda like slope

y-1700=200(x+4)

step-by-step explanation:

200(x+4) is 200x + 800 she is saving 200 per week x is the weeks and the -1700 is. us that’s howmuch she already had