A store had 300 empty shelves. Each shelf could hold 20 cans. What is the total number of cans the shelves could hold? A. 280 cans
B. 320 cans
C. 600 cans
D. 6,000 cans

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

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.