Joe is 20 years old. his sister is half his age less 7. how old is his sister?

i think the answer is 3 but i'm not sure

c.

step-by-step explanation:

this is ms. king.

just remember - if you can look it up, so can i.   i really hope that your submitted assignment doesn't look like any i find here, or like any other student's.

or, you can ask me for

step-by-step explanation:

seeing as both a and c are the same equation, they both are answers.

step-by-step explanation:

even though we can't see the slope, we know we need x = -3 to be equal to 0. in the equation y = x + 3, this is satisfied.

y = x + 3

y = -3 + 3

y = 0