Math is so hard for me

What is the value with a place of tenths in 907.456 1) 0 2) 6 3) 4 4) 5

Darian wants to build a regulation size pool table that is 9 feet in length. he plans he ordered are 18 by 36 inches. what is the scale factor of the dilation he must use to build a regulation pool table

What value of x is in the solution set of 4x - 12 s 16 + 8x? -10 -9 -8 -7