How much pure acid should be mixed with 2 gallons of a 40% acid solution in order to geta 70% acid solution? im having a hard time coming up with the equation

Do,h = (7, 9) (14, 18) the scale factor is

If each bricks costs and he can only buy one brick how much will it cost him to get the material to put around the outside of his garden?

Drag the tiles to the correct boxes to complete the pairs. match the exponential functions with their horizontal asymptotes and y-intercepts. f(x) = 7x − 4 f(x) = 3x+2 + 4 f(x) = 9x+1 − 4 f(x) = 2x + 4 horizontal asymptote and y-intercept exponential function horizontal asymptote: y = 4 y-intercept: (0, 5) arrowboth horizontal asymptote: y = -4 y-intercept: (0, 5) arrowboth horizontal asymptote: y = -4 y-intercept: (0, -3) arrowboth horizontal asymptote: y = 4 y-intercept: (0, 13) arrowboth