Aboy is 17 years old and his sister is twice as old. when the boy is 23 years old what will be the age of his sister?

use distributive property on all like terms and change your signs if you have a double negative or if you have positive/negative

hello,

as we don't know if g(x) is continue,

answer b

f(x)=2x²-8x+1=2(x²-4x+4)+1-8=2(x-2)²-7

vertex is (2,-7) ( a minimum since coefficient of x² is > 0)