Write the equation 2x-3y=6 in slope intercept form

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.

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)