Answer:
No, No tengo, Tenemos que Comprar.
Explanation:
This means that you don't have any, you have to buy some.
Your mom asks you if you have beans for math class, and you say that you don't, that you have to buy some.
Yo como tacos.
Verbs in the present tense are typically conjugated in a pattern. They have specific rules and conjugations that have to be followed. Find the rules and you will succeed.
Margarita se levanta a las siete
Buy tickets for your sister