Please help really need it with the satellite directly overhead, how far above the surface of earth does the satellite need to be so it provides the maximum coverage of its signal?​

The price of a coat increased from $78 to $92. what is the price increase percentage?

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

The sixth grade art students are making a mosaic using tiles in the shape of right triangles. each tile has leg measures of 3 centimeters and 5 centimeters. i f there are 200 tiles in the mosaic what is the area of the mosaic.