Read the article and answer question.

Peppermint perks

Not just a breath freshener, studies have also shown that peppermint could help alleviate symptoms of IBS (irritable bowel syndrome) by reducing abdominal pain, gas and diarrhea. “Peppermint tea in particular helps soothe indigestion caused by a bug or IBS,” says Eric Yarnell, professor of botanical medicine.

Strong mints and even candy canes may help tame an upset stomach, too, as long as you don’t have heartburn.

Peppermint is also appreciated for the soothing effect it has in treating headaches, migraines, skin irritations, nausea, and menstrual cramps.

(Adapted from Reader’s Digest)

GLOSSARY
peppermint – tipo de menta (hortelã-pimenta)
bug – virose

Based on the article, peppermint

Para que uma função seja invertível, é necessário que ela seja

As vírgulas obrigatórias do texto abaixo foram omitidas propositalmente:

(I) O tão esperado verão deverá ser intenso nos próximos meses. (II) Estima-se que na Região Sudeste as temperaturas poderão manter-se acima dos 35 graus. (III) Calor e chuva formarão portanto a combinação perfeita para o Aedes aegypti o mosquito transmissor da dengue.

Assinale a alternativa com a afirmação incorreta sobre o emprego exigido dessas vírgulas.

Duas esferas idênticas, A e B, de 200 cm³ e 140 g, cada uma, são colocadas na mesma linha horizontal dentro de dois recipientes idênticos, I e II. A esfera A é colocada no recipiente I, cujo conteúdo é água, com densidade igual a 1 g/cm³ e a esfera B no recipiente II, cujo conteúdo é óleo, de densidade igual a 0,6 g/cm³.

Dado: aceleração da gravidade = 10 m/s².

Pode-se afirmar corretamente que:

Dentre 8 candidatos, 5 devem ser selecionados para comporem uma comissão de formatura. O número de formas distintas de se compor essa comissão é

Read the anecdote and answer question.

Mother to small son: “Be sure to wash your arms before you put on your new shirt.”

Small son: “Should I wash for long or short sleeves?”

The underlined word, in the anecdote, is a(n)

Read the text and answer question.

A trip to Los Angeles

James Hall has a new job with Lemon Computers in Philadelphia. He’s 22 and just out of college. As part of his training, he has to spend six weeks at company headquarters near Los Angeles. It’s his first business trip, and he’s packing his suitcase. He lives with his parents, and his mother is helping him.

(New American Streamline)

GLOSSARY
headquarters – matriz / sede principal

According to the text, which alternative does not complete the blank correctly?

James Hall .

O coeficiente angular da reta que passa pelos pontos A(–1, 3) e B(2, –4) é

Read the extract and answer question.

Before my grandfather died, he said to me: “Don’t waste your time! Travel around the world! Have a beautiful house! Be with a person you love! Go to the beach! Have a lot of friends!”

(Adapted from Inglês no Mundo do Trabalho)

The imperative form of the verbs underlined in the extract expresses