Sophia gave 1/2 of her semi-precious-rock collection to her son. she gave 1/2 of what she had left to her grandson. then she gave 1/2 of what she had left to her great-grandson. she kept 10 rocks for herself. how many rocks did she have in the beginning?

idk

step-by-step explanation:

htrhyjk

step-by-step explanation:

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if e is the midpoint of bd, then bd is 14.

step-by-step explanation:

since no one answered yet i will give it a shot, not completely sure tho.

i think it should be y=cos(x+2pi), (third answer, answer c)

good luck.