-4 + -7 ?
HELLPP
Can somebody explain to me please

Which equations represents circles that have a diameter of 12 units and a center that lies on the y-axis? check all that apply

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

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]