Determine the domain of the function represented by the equation
f(x)=6x^2+3

How do i do this? i don’t understand

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2