Find the unit rate for $150 for 16ft2

What does it mean by solve the exponential equation for x?

Line cd passes through points c(1, 3) and d(4, –3). if the equation of the line is written in slope-intercept form, y = mx + b, what is the value of b? –5 –2 1 5

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers