The total of 26, 78, 198, 475 and 620 is
2 answers:
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if you want to shift , $10$ units right, it will pass through $(10,0)$ , right?
and you can achieve this by subtracting $10$, but with the dependent variable. i.e. $y=2(x-10)$ , you can verify by substituting $(10,0)$
so in general, if you want to shift a function right, you subtract the number from it.
so , $f(x)=2(x-10)+3=2x-20+3=2x-17$
thus, $k=17$
I know, this isn't in the option, that's why I gave a simpler example in the beginning, you can verify that one easily, hence the method is correct, but option are not