Solve the following system of equations. let z be the parameter. 3x + 2y - z=1 4x + 3y + z = 4 select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. o a. there is one solution, c . o b. there are infinitely many solutions. the solution is o c. there is no solution. z), where z is any real number.

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations