Mrs. Bryant's homeroom students are collecting boxtops. Each student is responsible for collecting 4% of the class's overall goal. Kevin has already collected 37.5% of his collection requirements. If the class's goal is to collect 800 boxtops, how much is each student responsible for collecting, and how many boxtops does Kevin currently have? (Solving Percent Problem using algebra)

Why do interests rates on loans to be lower in a weak economy than in a strong one

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)

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.