1. Dibuja sobre una cuadricula una figura que tenga el mismo perimetro que un cuadrado de 8 u de lado y además, determina su área.

The function \( f(x)=(x+1)^{2}-1, x \leq-1 \) is 1-1. Find the range of the inverse function.

In his garden Tim plants the seed \( 1 \frac{1}{2} \) in. below the ground. After one month the tomato plant has grown a total of \( 8 \frac{3}{4} \) How many inches is the plant above the ground? The tomato plant is \( \square \) in. above the ground. (Type an integer, proper fraction. or mixed number.)

21. Carla had a piece of rope that was \( 14 \frac{7}{8} \mathrm{in} \). long. She used some of the rope for a crafts project. Now there is \( 14 \frac{3}{8} \mathrm{in} \). left. How much rope did she use? Use the number line to help.

a. \( \frac{1}{3}= \)

Obtener la fórmula molecular empírica y molecular de un compuesto cuya composición es de \( 40 \% \) de carbono, \( 6.7 \% \) de hidrógeno y \( 53.3 \% \) de hidrógeno. Dicho compuesto tiene una masa molar de \( 90 \mathrm{~g} / \mathrm{mol} \).