1. Determine c such that the system has no solutions. 9x - 8y = 2 27x - 24y = c 2. Determine c such that the system below has infinitely many solutions. 8x + 5y =3 24x + 15y = c 3. Solve the system of linear equations. 9x - 5y + 5z = 23 x - 5y - 2 = 13 5x - 3y + 5z = 21 4. Determine the whether the system is overdetermined or underdetermined, then solve the system. 4x - 1ly + 7z = -71 8x - 10y + 2z = -34 5. Solve the following system of equations x+ z=0 xty + 2z =8 y +z = 3 6. Solve the following limit lim In ( 12) t-+12e