b. Use the takle to write an equation that relates the height. \( y \), of a stack of DVD cases and the number of cases, \( x \), in the stac An equation that relates the height and rumber of cases is \( \square \).

en 1 molecula de agua Hay 2 moleculas de Hidrogeno por cada moleci de oxigeno Hay

An average-sized ant is about \( 4 \times 10^{-3} \) meter long. The circumference of the Earth is about \( 4 \times 10^{7} \) meters. (4) About how many ants would it take to wrap around the Earth?

1) \( \frac{\left(a^{2} b^{7}\right)^{6}}{\left(a^{2} b^{3}\right)^{4}}= \) 2) \( \frac{x^{2} x^{9} y^{3} y^{9} z^{5} z^{4}}{z^{3} y^{12} x^{30}} \) 3) \( \left(\frac{\left(a^{3} b^{4}\right)^{3}}{a^{4} a^{3} b b^{5}}\right)\left(b^{2} a^{9}\right) \)

Calculate the volume, in cubic centimeters, of a box which is 125 cm long, 37 cm wide, and 68 cm high. Report the answer with correct significant figures in cubic centimeters.

Sobre una recta \( x \) tienen los runtos ancecutivos \( A, B, C \) y \( D \). Calcular \( A D \) si \( A C=6, B C=4 \) y \( B D=8 \)