How many solutions does the following system have -5x-y=5 x-2y=-1 a. no solutions b. one solution c. two solutions d. infinity many solutions

Adding and subtracting matricesfind the value of each variable. x = and y = would

Tomas is making trail mix using granola and walnuts. he can spend a total of $12 on the ingredients. he buys 3 pounds of granola that costs $2.00 per pound. the walnuts cost $6 per pound. he uses the equation to represent the total cost, where x represents the number of pounds of granola and y represents the number of pounds of walnuts. he solves the equation for y, the number of pounds of walnuts he can buy. answer- b tomas added 6 to both sides of the equation instead of subtracting 6. just took the test

Is this a polynomial function? i need to know asap