Good evening,

Would you help with those questions, please?

1.

Watch the video and then solve the problem given below. Click here to watch the video. Solve the system of equations. x - 2y - Z = 4 - X + 6y - 3z = -12 2x - 11y + 5z = 22 Select the correct choice below and fill in any answer boxes within your choice. O A. There is one solution. The solution is (Type exact answers in simplified form.) O B. There are infinitely many solutions. The solutions are [,z) , where z is any real number. (Type exact answers in simplified form.) O C. There is no solution.Solve the following system of equations. Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. 5x + 3y + z= -40 x - 3y + 2z = 10 O A. There is one solution. The solution is (. (Type integers or simplified fractions.) 14x - 2y + 3z = -70 O B. There are infinitely many solutions. The solutions are ( ,z). (Type integers or simplified fractions.) O C. There is no solution.Solve the following system of equations. x+ y+ Z - W = 4 4x+ y- z+ w=3 x - 4y + 2z + w=4 -x - y+ z+ 3w = 4 Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. O A. There is one solution. The solution is (Type integers or simplified fractions.) OB. There are infinitely many solutions. The solutions are ,w) (Type integers or simplified fractions.) O C. There is no solution.The following table shows the average new car transaction price in the USA as a percentage of disposable income. Year % of Disposable Income 1960 0 43 1975 15 77 1983 23 85 (A) Find a quadratic function f(x) = ax + bx + c that fits the data, where x represents the number of years after 1960. f ( x ) = x2 +3.1x+43 (Round to three decimal places as needed.)The following table shows the crude steel production in the USA, in millions of metric tons. Year Crude Steel Production 1980 0 80 1988 8 92 1991 11 91 (A) Find a quadratic function f(x) = ax + bx + c that fits the data, where x represents the number of years after 1980. f ( x ) = x2 +2.833x +80. (Round to three decimal places as needed.)Watch the video and then solve the problem given below. Click here to watch the video. Solve the system of equations. x - 2y - Z = 4 -x + 6y - 3z = -12 2x - 11y + 5z = 22 Select the correct choice below and fill in any answer boxes within your choice. O A. There is one solution. The solution is (Type exact answers in simplified form.) O B. There are infinitely many solutions. The solutions are z) , where z is any real number (Type exact answers in simplified form.) O C. There is no solution