Joannie lent 200$ to her sister. four years later, her sister repaid her in full with 228$. what a simple annual interest rate did joannie's sister pay?

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.

What is the measure of each of the two angles formed by the bisector of the diagonal of a rhombus if the original angle measures 58 degrees?

Carlos by 24 mi and ran 6 miles what is the ratio of the distance carlos ran to the distance he biked