One Step Equations, need help with this one:

x+3=7

Thanks

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

Jose predicted that he would sell 48 umbrellas. he actually sold 72 umbrellas. what are the values of a and b in the table below? round to the nearest tenth if necessary

These tables represent a quadratic function with a vertex at (0, -1). what is the average rate of change for the interval from x = 9 to x = 10?