In the diagram, if a light bulb is placed at d and b is closed (as shown), what will happen?.

Sat no calculator section question in the picture

Afish fossil is found in a rock. a foot bone and tooth are found in an older layer of the same rock. what can scientists learn from the rock? a) the area changed from land to water. b) the area changed from water to land. c) the area has always been land. d) the area was once an ocean.

At the year's end, a share of ardex industries was worth $49.50. this was $9 less than three times its value at the beginning of the year. what was the price of one share of ardex stock at the beginning of the year?