A student chemist created the following model to explain a phase change they observed at home: A chocolate bar was placed in a hot pan. The chocolate began to flow, and it took the shape of the pan. Explain the changes you would make to the model in order to correctly show what changed the chocolate molecules’ freedom of movement.

When drawing a trend line for a series of data on a scatter plot, which of the following is true? a. there should be an equal number of data points on either side of the trend line. b. all the data points should lie on one side of the trend line. c. the trend line should not intersect any data point on the plot. d. the trend line must connect each data point on the plot.

Which function is odd check all that apply a. y=sin x b. y=csc x c. y=cot x d. y=sec x

What are “like terms”? why can we only add like terms?