Can someone explain to me how to do this?

G(x) = 2 sin(2x - π) + 4. using complete sentences, explain how to find the minimum value for the function.

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

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.