For a total magnification of 20x

200x

Explanation:

200 because it's 100 times 2 because if the ocular is 10x and the low power objective is 20x, then the total magnification under low power is 10 x 20 = 200x.

The details that could be included in a biography of Frida Kahlo are:

1. a description of the first self-portrait Kahlo painted

3. an account of the accident in which Kahlo was seriously injured  

6. an example of how Kahlo influenced artists who came after her

Explanation:

Frida Kahlo was a Mexican painter.  She was born in Coyoacan, which at that time was a small bus stop on the outskirts of Mexico City. Her father was a painter and photographer of German-Jewish origin.

Kahlo began painting after a serious traffic accident in 1925. Her lifelong pain after the accident was the subject of many of her images. In addition to personal experiences, she also describes how hard life women lived. She was also influenced by the culture of the Mexican indigenous people, and portrayed them in bright colors, with a mixture of realism and symbolism.