A=(1-1/22)(1-1/32)(1-1/42)*...*(1-1 /1002) Integral part of A, 8A, 16A, fractional part of A=?

Find the height of a square pyramid that has the volume of 32 ft.³ and a base lengthof 4 feet

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.

Can some one explain how to slove specifically, what is the value of x? 0.9(x+1.4)-2.3+0.1x=1.6 enter the answer as a decimal in the box. x= ?