Idon’t know how to find a and b. for a) i used the slope formula to find the derivative using the end points but i end up with -49.346 price/quantity. for b) i need to make sure my derivative is correct before i start plugging in those numbers

Use the elimination method to find the solution to the system of equations. 2x - 3y = -9 -x + 3y = 6

The angles below are supplementary. what is the value of x? a pair of supplementary angles is shown. one angle measures 7x + 33, and the other angle measures 70. 5.3 8.14 11 14.7

Do some research and find a city that has experienced population growth. determine its population on january 1st of a certain year. write an exponential function to represent the city’s population, y, based on the number of years that pass, x after a period of exponential growth. describe the variables and numbers that you used in your equation.