19. (5 points) Convert the points below from polar to rectangular coordinates. ( -1. -7 ) 20. (5 points) Convert the points below from rectangular to polar coordinates. V2 Page 27 30 - +16. (10 points) Daily revenues, in millions of dollars, for a corporation are given in the table below. Use a system of equations to fit a quadratic function /(x) = az? + bx +c to the data, where a is the number of days after Day 3. Round your coefficients to the nearest hundredth. Day Revenue 340 200 356 f(I) =Maum 14. (10 points) Determine all points at which the function is discontinuous. Ar'+ 9x - 10 h(r) = 12 - 1 - 12\f15. (10 points) Calculate the slope of the line tangent to the given function at the given point f(x) =r+6r+7 for r = -117. (20 points) Eliminate the parameter and plot the curve using rectangular coordinates. Use arrows to show the direction of t. Pay attention to the domain of t. I = Vi+ 2 and y= -t-4 for Ost52 Rectangular Equation: 3.5 3 2.5