The lines 2x=ky+2 and (k+1)x=6y-3 have same gradient. Find possible values of k I need the answers ASAP please!

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

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.

Which of the following parabolas opens down?