What must be true about two nonzero integers that combine to equal zero? Choose the correct answer below.
OA. The two integers are the same.
OB. The two integers are to the right of zero on a number line.
OC. The two integers are opposites.
OD. The two integers are to the left of zero on a number line.
PLEASE HELP

it would take 5 hours i think idk i'm not that good at math.can you me with my questions i need asap.

we can set up an equation to find the girls' ages. the equation is         28=0.5x-5+x. (comment if you need me to explain how i got this equation.) so, you add x and 0.5x to get 1.5x and add 5 to each side. your new equation is 33=1.5x. now divide both sides of the equation by 1.5 to get 22=x. because x is mary's age, to find jasmine's age we subtract mary's age from 28. we find that mary is 22 years old and jasmine is 6 years old.