GE=5x+36 and GF=2x+51. What is the value of x? A=12 B=5 C=29 D=2

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

If m 17 27 90 63 ** picture is attached

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.