Isabel has 10 boards that are x meters long. She has
5 boards that are 2x meters long. She also has 4
boards that measure 3 meters, 6 meters, 9 meters,
and 13 meters, respectively. If she were to lay all
her boards in a straight line with no gaps between
them, the boards would measure 271 meters.
What is the value of x ?
E. 5 meters
F. 6 meters
G. 10 meters
H. 12 meters

Find the cosine function that is represented in the graph.

What are the solutions of the equation? 16x^2 + 24x + 5 = 5 a. 1/4, 5/4 b. -1/4, -5/4 c. -1/4, 5/4 d. 1/4 , -5/4

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.