Plz 50 points and brainleist which expression shows the result of applying the distributive property to −2(1/3 x− 1/5)
a.−2/3x−2/5
b.2/3x+2/5
c.2/3x−2/5
d.−2/3x+2/5

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.

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

Mrs. blake's bill at a restaurant is $42.75. she wants to leave the waiter an 18% tip. how much will she pay in all, including the tip?