Solve the system of equations 2x+y+z=1 2x-y-3z=-3 x-2y-4z=-2 a)-20 b)-16 c)4 d)10

Josie buys a pair of boots that retail for $52.00 dollars, however they are currently on sale for 25% off how much does josie pay for the boots if there is also a 6% sales tax on them