This is the 148th most frequent Portuguese word.
muitas
"Many" or "a lot of."
In this sentence, 'muitas' is used as an adjective modifying the noun 'pessoas,' to indicate a large quantity or number of people.
Muitas pessoas gostam de passear no parque.
Many people like to walk in the park.
Here, 'muitas' qualifies the noun 'ideias,' again indicating a multitude or several ideas.
Ela tem muitas ideias para o projeto.
She has many ideas for the project.
In this case, 'muitas' describes the noun 'soluções,' meaning an ample or substantial amount of solutions.