A pizza company is advertising a special card. The card costs $50, but allows the owner to purchase pizzas for $5 each for one full year. Pizzas are normally $12 each.
Write expressions that represent the cost of n pizzas with and without the card.
How many pizzas would you have to purchase in a year to make the card worthwhile?

step-by-step explanation:

the angles look like they are complementary. without more information, you cannot be sure that they are.   so the two angles may or may not add up to 90o. since you can't be sure, don't choose b

the angles certainly are not supplementary. they don't look like they add up to 180 degrees. and they are not marked in a way that would tell you that.

they are not vertically opposite. for one thing they are not equal which vertically opposite angles are.

the only suitable answer is a adjacent angles -- not a really common term, but nothing else works.