Answer:
1. La clase es a las nueve.
2. ¿Cuántos libros hay en la biblioteca?
3. Este es el estudiante de la otra escuela.
4. ¿Quien de física?
5. Este es estudiantil.
6. ¿A qué horas es la clase?
7. Emilio es mi compañero de clases.
Explanation:
Espero y te ayude...
<h2>
Answer:</h2>
Decreasing
<h2>
Explanation:</h2>
In this problem, we have the following function:

This is an exponential function. This type of function is given in the form:

In this case:

Given that:

<em>Then, the function is decreasing. The graph is shown below.</em>
The Northern hemisphere consists of about 90% of the earth's land area.
The Southern hemisphere consists of about 90% of sea.
North has winter.
South has summer.