Sedimentary rocks with ripple marks suggest that the rocks were formed where? a) along a beach or stream bed b) when animals walked over them c) from shell fragments of ancient sea-dwelling animals d) when wet mud dried and shrank

I believe your best answer would be A  good luck friend

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)

hello

answer: collecting information/data

reason: the student is going around and asking people questions to collect data

i hope this