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jared is playing a game on a grid that is made up of 25 equally sized squares. some of the squares are shaded. if the probability of picking a point at random in one of the shaded squares is exactly 0.16, how many of the squares are shaded?
a) 2
b) 4
c) 16
d) 21

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

The table represents a function. what is f(-2)? a.-3 b. -1 c.1 d.3

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.